Connect with us


How to Spot a Spy Camera in Your Bathroom Mirror or Room?



white plastic tool

There has been an increase in the number of complaints about the usage of spy tools and covert cameras for unethical purposes. The majority of these spy cameras are aimed at unsuspecting visitors who are staying in hotel rooms, Airbnb homes, cruise ships, and other types of accommodations.

It is unfortunate to report that it seems that this pattern will not appear to be controlled any time soon. It is to your advantage to be aware of and able to implement, preventative steps against becoming a victim of crime.

The bathroom mirror is one of the most typical locations for a covert camera to be concealed. Examine the mirrors in the restroom, the trial rooms, and any other relevant locations.

As the opposite section of the mirror may seem to be the same as a standard mirror, some malicious people place a concealed camera on the other side of the mirror that is see-through.


What you need to be sure of is:


Proceed inside the location while maintaining the pretence that you are being watched. If this is your first time staying in a hotel or Airbnb, you should prepare yourself mentally for the possibility that someone is observing your every move.

You may assume the role of a detective and conduct a comprehensive search of the region if you adopt this mentality.

If you assume that you are being observed, it will be easier for you to avoid being a victim. You need to look in every mirror in the room to ensure that there is not a two-way mirror on any of them. On the other side of a two-way mirror, a camera is concealed on its surface.

See also  How Access the Samsung TV`s 190 free and Premium Channel in your Samsungs TV's ?

Checking to see whether a room has a two-way mirror may be done in many different methods, including the following:

The Test of the Fingernail

The first step in using your fingertip to determine whether or not a mirror is a two-way reflection is to put your finger on the surface of the mirror. Take note of what your fingertip looks like reflected in the mirror.

If the reflection of your fingertip and the surface of the mirror cannot come into contact with one another and there is at least a quarter-inch space between them, then the mirror is clean.

However, if you put the tip of your finger on the mirror and the reflection moves to contact your finger, you will see that the mirror is not entirely trustworthy.

If you want to know for sure whether or not something is a two-way mirror, you shouldn’t rely just on the fingernail test. There are a few elements that could influence the results that you get:

It is difficult to discern whether you are touching your reflection or something else entirely while you are in this position. Many different things may affect it, such as the lighting and the substance that the mirror is made of.

When you believe you are touching a first surface mirror, there are times when you are not doing so.

In addition to this, a two-way mirror may be a mirror with a second surface. Do not put all of your faith in the results of this test alone if the lighting and environment in which the mirror is situated have shown that it seems to be a two-way mirror.

Some businesses, such as gas stations and pubs, employ a metal back with a mirror tint rather than an actual mirror, which may create the impression that they have a two-way mirror. It is to prevent the mirror from shattering, which would be a liability for the company.

See also  Maximize Your Home's Energy Efficiency: How Does Ecobee Eco Work?


Make sure that there isn’t a two-way mirror by looking for it with a flashlight.

Because a two-way mirror can function as both a mirror and a window simultaneously, these mirrors are the ideal choice for concealing cameras. You may use a flashlight to inspect the mirror if you have any reason to believe that it is not functioning properly.

After turning off the lights in the room, place the flashlight against the glass, and then turn the lights back on. If you can view the area on the other side of the mirror, then you will know that it is a two-way mirror.

Check that the mirror was put in correctly.

Examine the mirror to see whether it seems to be hanging on the wall or if it is a part of the wall. Check the rear to see if there is a wall there if it seems like it could be hanging.

If it is an integral part of the wall, then there is a possibility that it is a two-way mirror that is built into the wall rather than being hung on the wall. People on the other side of the wall will be able to see whoever is in front of the mirror as a result of this.

A layer of a micro pane, also known as “two-way mirror coating,” is often applied to the surface of a two-way mirror.

If you are standing on the treated side of the mirror when you look at yourself in it, you will be able to see your reflection; but, if you are standing on the untreated side, the mirror will seem to be tinted.

If there is a wall behind the mirror, then you can be certain that it is nothing more than a standard mirror.

See also  What Is Use Of Bluetooth amplifiers? Are They Useful?

When it comes to installation, bolting is not necessary for a standard mirror. If you attempt to raise the mirror on the wall and find that it is placed in the wall or fastened into it, then you will know that there is a two-way mirror there.

Putting Fingers to the Mirror


You may also use the tap method to determine whether or not there is a two-way mirror in the room. The sound that is produced by a standard mirror is described as being flat and dull, whereas the sound of a two-way mirror, which has space behind it, will be described as open, crisper, or hollow.

If you believe you have a two-way mirror, the most effective solution to deal with it is to either hang another mirror over it or cover it with a piece of paper.

Make sure the Lighting is Okay.

Check the level of illumination to see whether it seems to be much higher than normal. In such a case, you may be looking into a two-way mirror. On the other hand, if the illumination in the room is normal and you cannot see through the mirror immediately away, then it is a typical mirror.

The light must be 10 times brighter on the side of the two-way mirror that is being reflected than it is on the side that is not being reflected. You will be able to see clearly through the glass to the observation area even if the lighting is dimmed.

Examine the View from Within the Glass

Put your face inside the mirror, then cup your hands around it to create a tunnel that will block as much light as possible. Place your face in the mirror.

You should be able to see what is on the other side of the glass if the light in the observation room is brighter than the light on the side of your mirror.


Now that you are aware of what to do, you should not be alarmed if, upon entering the room, you see a mirror that appears to be in disrepair. whether you keep in mind these simple procedures to figure out whether someone is watching you, you won’t have to worry about your safety.

Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *


How To Find Out That Your Tv Has Your HDMI-Arc?



What the word “HDMI ARC” means, have you? What makes it different from a standard HDMI cable? What role does it play? or why inscription is on your television in the first place?

Continue reading, for you have arrived at the correct location. But before we get into that, if this is the first time you’ve heard of the term HDMI (read: you’re a beginner),

you might want to look over these articles, which explain what HDMI is, its functions, and the most effective way to use it on your television, laptop, and other monitors, among other things.

HDMI ARC vs Optical - Which Connection is Better? - Nerd Techy

What exactly is the HDMI ARC?

HDMI ARC is more similar to a fork than it is to standard HDMI. The acronym ARC stands for “Audio Return Channel,” and the idea behind the protocol as a whole is to make it possible for the various components of your home’s entertainment setup to be connected in a way that does not need the use of cables. But how exactly?

In addition to allowing your consoles and other HDMI-compatible media players, set-top boxes, and other devices to transmit audio signals to your TV, HDMI ARC ports enable your TV to transfer audio to your soundbar or external speaker system, doing away with the need for an additional optical audio connection.

What does HDMI ARC do?

ARC can simultaneously broadcast and receive AUDIO signals in a reverse way via the use of a single HDMI connection thanks to a feature of the HDMI protocol. When you have more than one device (such as a PlayStation 4 console, an Amazon TV Cube, a Roku, etc.)

See also  Is Sonos Move Work With BLuetooth?

but just one HDMI input on your soundbar, HDMI ARC is a very useful feature to have. Also, if your home entertainment system is equipped with HDMI ARC, you may use the same remote to operate your TV, Soundbar, and any other receivers that you may have in your setup.

Does the soundbar need HDMI ARC connectivity?

These days, High-Definition Multimedia Interface (HDMI) connectors are standard on the majority of television sets. But, to connect a soundbar, you will need to check if your TV is equipped with an HDMI ARC connector (also known as an audio return channel).


When You Switch on Your TV, Your Sound Bar Will Also Start Up Automatically.

If you have a smart TV with built-in applications like Netflix or YouTube that produce their sounds directly from the TV, ARC enables this internal audio to be played directly on your home theatre without the need to connect an additional audio cable to your TV.

It is convenient if you already have a lot of cables running throughout your home. Since HDMI ARC enables the transmission of audio data from both internal and external sources, it enables your television to function as the primary hub for audio.

A single remote may be used to do many tasks simultaneously, including managing the audio and level, turning the TV and Soundbar on and off simultaneously, and more.

HDMI and HDMI ARC Differences

In the same manner, as every Thunderbolt port is a USB-C port but not every USB-C port has Thunderbolt capabilities, every HDMI port is not an HDMI ARC port; nonetheless, every HMDI ARC port is capable of performing the same standard HDMI functions.

2009 saw the debut of HDMI ARC, which came a full five years after the HDMI protocol was unveiled for the very first time in 2004.

The capacity of your TV’s HDMI ARC connection to simultaneously accept audio signals (downstream) from your devices and transmit them to your soundbar/receiver/home theatre (upstream) distinguishes it from standard HDMI, which can only either receive audio signals at one time or send them downstream.

The ARC protocol makes it possible for a TV to transfer an audio signal downstream. It does this by initiating a “handshake” between the TV and the audio device, therefore establishing a two-way street for the flow of information.

Caution is advised, however, since to make use of both the downstream and upstream aspects of this protocol, you will need to be certain that both your soundbar, home theatre, or receiver, as well as your TV, support the ARC standard.

Yet, how can you determine whether or not your TV is compatible? Read on to find out.

See also  What Is Use Of Bluetooth amplifiers? Are They Useful?

Does your TV support HDMI ARC?


As was said previously, ARC was a function that was added to HDMI in the year 2009. If you bought your TV between the years 2004 and the present, then it is quite probable that it is compatible with HDMI ARC.

Nevertheless, you don’t have to take my word for it; there are more reliable techniques to verify this.

  1. Examine the HDMI ports on the back panel of your TV, and pay particular attention to any of the ports that have the letters ‘ARC’ written around them. In most cases, contemporary Televisions, even Smart TVs, only come equipped with a single ARC connector.
  2. Checking the user handbook is another option if there is no ‘ARC’ label on any of the HDMI ports on your TV. It will establish whether or not the ARC feature is supported.
  3. Finally, go to the website of the TV maker to investigate the port characteristics of your television.

Does HDMI ARC Port Need Any Specific Cable(S)?

No, it doesn’t. You do not need to acquire ARC-specific HDMI cables since your ordinary HDMI cables will function just fine. ARC-specific HDMI cables do not even exist.

Not only does HDMI ARC enable users to connect all of their internal and external audio sources to their home theatre with a single cable that runs through their television, but it also simplifies the entertainment system as a whole by reducing the number of cables that are typically required to make such a connection.

Is there a certain HDMI cable that’s required for ARC?

While using HDMI ARC, a new HDMI cable is not required to be used. Every HDMI cable should be able to meet the standards; the only time that this may (possibly) become a problem is when we go on to eARC. But we’ll talk more about it in a bit.

Which televisions feature an HDMI ARC input?

You may examine the HDMI ports located on the back of the television to identify whether or not it supports HDMI ARC by doing so.

If an HDMI connection is branded with “HDMI ARC” or “ARC,” it indicates that the TV supports the HDMI Audio Return Channel standard. Also, if your TV was manufactured after the year 2009, there is a good chance that it has HDMI ARC.

How can I make my TV HDMI ARC?

If your TV is unable to correctly recognise the HDMI-ARC connection, you may manually configure it by navigating to the Settings menu on your device.

Go to the HDMI control / Expert settings menu and check that the HDMI ARC option is on. When the connection has been successfully made, your TV will send all of its output to the sound systems that are linked by ARC.

See also  How Many Electricity Consumed With Usage Of Smart Plugs?

How can I connect a soundbar from Samsung to HDMI if it does not have ARC?

Connecting an external device to a TV that does not have an ARC port and a sound bar requires connecting an HDMI cable, which must be purchased separately, from the external device to the TV.

After that, use an optical lead to connect the external device to the Soundbar (sold separately). If all you want to do is connect to the television, then you won’t need the HDMI cable at all.

Where exactly are the HDMI ports located on my Samsung television?

On the rear of the TV or the One Connect Box, the HDMI port will be referred to as the ARC port. The vast majority of One Connect Boxes are equipped with an HDMI-ARC connector (it is usually the third HDMI port).

With A Samsung TV, What Does HDMI eARC Stand For?

The most significant benefit of the eARC, which is a technology that was introduced in the most recent HDMI 2.1 standard, is that it significantly enhances both bandwidth and performance.

It is compatible with high-bitrate formats such as Dolby Atmos and DTS, and it enables you to send high-quality audio from your TV to your soundbar or AV receiver.

How can I tell whether my television is capable of playing Dolby Atmos?

Checking the information panel on the front of your A/V receiver or soundbar is the only foolproof method to determine whether or not Dolby Atmos is functioning properly (if it has one, or perhaps an on-screen display). The kind of audio signal that it is now dealing with should be shown by it.

What sort of HDMI cable do I have and how can I identify it?

There are two different approaches that you may use to evaluate the quality of the cable that is currently installed. Examine the label to see whether the cable supports High Speed, Premium High Speed, or Ultrahigh-Speed data transfer rates.

You may be able to search for the type of HDMI cable if the manufacturer and component number is written on the lead. It is useful if the cable does not clearly state what kind it is.

DVI or HDMI—which one is the faster connection?

The video quality provided by HDMI is greater than that provided by DVI due to HDMI’s higher resolution and refresh rate. More and more gadgets use the HDMI standard. Up to 32 audio channels, including DTS HD and Dolby HD, may be supported with an HDMI connection.

Does 4K support come standard with all HDMI cables?

Keep in mind that any High-Speed HDMI connection may transport a 4K video signal. It is an essential fact to keep in mind. If you purchased your cables after 2009, then you should be able to see 4K material on your screen.

HDMI cables that have been tested under version 1.4 should be able to transport 4K, however, the quality of the transmission may not meet your expectations.

What other options do I have besides HDMI ARC and optical to connect my soundbar to my TV?

You have the choice of going high-tech with a wireless connection or going mid-tech with 3.5 mm aux or RCA cables if you wish to connect a soundbar to the television in the absence of an HDMI or optical port.

Converting coaxial cables to work with a different kind of connection may also be accomplished with the help of an auxiliary device.

Continue Reading


How To Uninstall Ecobee Thermostat Sensor From The Wall?



There is no information on how to remove Ecobee smart thermostats from your home since the company does not provide directions on how to do so. Ecobee is quite excellent at offering instructions on how to install and manage your smart thermostat.

The directions they provided on how to remove the backplate were the next best thing we could find.

The Ecobee thermostat is joined to the backplate, which is the component that is bolted into the wall and holds the Ecobee in place.

What is the procedure for removing the backplate from my Ecobee?

Placing your thumb and index finger on the backplate will allow you to gently detach your thermostat from the backplate, which is the first step in removing the Ecobee backplate. After that, exert some force against the Ecobee3 Lite.

To remove the backplate from the wall, remove the screws that are attached to it.

For what it’s worth, we think this information is severely lacking all by itself. To remove the backplate, the wires will need to be removed and handled separately.

If the power has not been cut off to these wires, they will be very hot to the touch. Do not tamper with energized wires if the power has not been turned off first.

See also  How Access the Samsung TV`s 190 free and Premium Channel in your Samsungs TV's ?

In addition, if you wish to entirely remove your Ecobee thermostat from your home, the information provided here is insufficient. If the power is not turned off, there is a risk that the HVAC equipment may be damaged or that you will electrocute yourself.

Before you start working on this project, make sure the power is turned off. We will talk about this again. A secure environment is essential.

How to Take Off the Ecobee Thermostat That Is Attached to the Wall?

Ecobee Thermostat

Turn off the power to your heating and cooling systems.

Find the circuit breaker for your HVAC system, then turn the breaker for the HVAC off. It will turn off the electricity to your HVAC system. In certain cases, turning off the breaker is unnecessary since there is a power switch positioned next to the furnace that may be used instead.

Make sure the power is turned off.

The screen of the eco-bee should be completely dark and black. You will not be able to connect to it using the app or make any adjustments to the temperature there.

If the screen on the Ecobee is still showing information, try adjusting the temperature to see whether the heating, ventilation, and air conditioning systems were only partly switched off. Turn on either the heat or the air conditioning, depending on the time of year.

To do this, set the thermostat to a temperature that is either lower or higher than what it is now reporting on the display. It shouldn’t take too long until you hear a relay switch, and then shortly after that, the fan should begin to rotate.

Nothing happening is a positive indication, so keep your fingers crossed! At this point, all that remains is for you to find out how to deactivate the Ecobee device. There is a chance that there is an additional breaker that has to be turned.

Remove the Ecobee Thermostat completely from its mounting in the wall.

You are now in a position where you can follow the guidelines that Ecobee provided, which we previously discussed. Maintain contact between the trim plate and the wall if it is already attached. When the thermostat has been removed, the backplate and trim plate may then be taken off.

When the Ecobee 4 or a subsequent model is removed, it will produce a clicking sound. The Ecobee 3 may be removed smoothly and quietly without creating any clicking sounds.

See also  Maximize Your Home's Energy Efficiency: How Does Ecobee Eco Work?

The clicking sound was included as a positive feedback mechanism so that you could determine whether or not the component had been correctly placed.

Disconnect any wires that are attached to the terminals on the backplate.

Take a photo of the wiring configuration or make a mental note of which wires connect to which terminal. Be very careful to take note of whether or not you have a common wire.

There is going to be a wire that goes to the terminal that is labeled “C.” If you DO NOT have a Common wire, be sure to do step 7 before moving on.

The switch will be moved to the off position for each terminal that requires the installation of a wire. When you are pulling the wire away from that terminal, give this switch a light push and keep it down while you do so.

The switch will return to its normal position after the wire has been removed, which is at the same level as the other switches.

Remove the two screws that are securing the backplate and trim plate to their respective positions (if installed).

It is time to either take off or put on the trim plate that was previously there. If you want to reinstall your Ecobee Thermostat, you may do so by following these procedures in the opposite order.

Take note that the trim plate cannot be removed without first severing the connection between the backplate and the wires.

Detach the PEK from the heating, ventilation, and air conditioning system if you do not have a common wire.

PEK stands for Power Extender Kit. Your home’s HVAC system, which is typically installed in either the attic or the basement, is linked to the PEK. It should not be confused with the condenser that is located outdoors.

Fill up any Cracks or Holes in the wall.

Now is the time to patch up the two holes left by the Eco Bee thermostat if your replacement thermostat is not going to cover them when it is installed.

Place the replacement thermostat in its location (This is IMPORTANT).

It is not safe to turn on the electricity when the cables are unsecured. Turning off the electricity is the safest option until you can replace the thermostat with another device.

Be very careful if you decide to replace your Eco Bee with a different model of the same brand. Backwards compatibility is only available between the Eco Bee Smart Thermostat and the Eco Bee 4 backplate.

See also  How Do Optimal Configurations for The Equalizing on A Samsung Soundbar?

It is not available on any of the other Eco Bee models (Eco Bee 3 Lite or Eco Bee 3). These previous versions each had their own unique backplates and wiring configurations.

Use Extra Caution, and don’t attempt to Forcibly Fit Anything That Isn’t Designed to Do so. You may locate a help page on Eco Bee’s website that is specifically devoted to this subject by clicking here.

How to Take Off the Eco-Bee Sensors That Are Attached to the Wall?

Ecobee Thermostat

If you are going to take apart the Eco Bee Thermostat, you may be interested in learning how to take apart the sensors as well. The Eco-Bee sensor wall mounts may be removed from your wall by following these instructions, which will walk you through the process.

If all that is required of you is to switch out the battery, then you just need to do the first step in the process that explains how to remove the Eco Bee sensor from the wall.

Detach the Room Sensor from its Mounting on the wall.

The battery cover is the Wall Mount itself. To remove the sensor, first locate the recessed corner on the back of the sensor using your finger. It will allow you to remove the sensor.

You may pull the sensor off the cover from the recessed corner using either your finger or a tool. It should be done very carefully. In most situations, we can utilize my finger.

When we take the Room Sensor away from the wall, we make an effort to avoid accidentally damaging the wall by using our fingers to keep the battery cover or wall mount in place against the wall.

Using the Appropriate Method, Detach the Wall Mount from the Wall.

If it is screwed in, you will need to remove the screw using a screwdriver. If mounted using adhesive tape, heat the tape with hot air to make it stickier. Pull carefully, starting from one side, until the object is gone.

Heal any Damage to the Wall (if any exists).

Fix any holes that the screws may have made. You may use Goo Gone to eliminate any sticky residue that is still present after cleaning.

Take off the smart sensor that is attached to the wall mount.

Just snapping the Smart Sensor onto the wall mount is required to successfully install it. It is possible to get rid of it by applying the approach in reverse.

Pull the Smart Sensor towards you from the top, rear side of the sensor while holding the wall mount in place against the wall with one hand. Do this while using your other hand to keep the wall mounted against the wall.

There is a cutout on the back of the Smart Sensor that corresponds to a recess on the wall mount, so that it may be attached to the wall. If you pull from this location, the sensor will be ripped off the wall mount along with the wall mount, inflicting more damage than is necessary.

With the Appropriate Method, remove the Wall Mount from the wall.

If it is screwed in, you will need to remove the screw using a screwdriver.

If mounted using adhesive tape, heat the tape with hot air to make it stickier. Pull carefully, starting from one side, until the object is gone.

Make Repairs to the Wall Damage (if any exist).

Fix any holes that the screws may have made. You may use Goo Gone to eliminate any sticky residue that is still present after cleaning.

Continue Reading


How To Install A Single-Phase Voltage Of 208 Volts?



Project designers who want to use an UPS, or uninterruptible power supply, that requires 208V single-phase power should be familiar with the characteristics of 208V electricity and how they interact with various UPS types.

Because it varies depending on the kind of UPS, because it is something that you may not run across on every project, and because it has the potential to be a pricey oversight if it is disregarded, this is one of the topics that generates the most inquiries.

As was said before, this circumstance does not always present a problem. Even though SEPS has designed the standard component numbers to eliminate any possible problems, there are still queries that need to be answered.

The Structure of the Problem


Simply expressed, there is the possibility of a mismatch occurring with certain combinations of UPS model, bypass switch type, and input voltage depending on the specifics of the setup. All of this is due to the characteristics of 208V electricity and the way that transformers have an effect on it.

Power at 120/208 Volts, Single Phase

208-volt three-phase electricity is converted into 120/208-volt single-phase power.

When seen on an oscilloscope, the three voltage waveforms that are present on the three conductors that are considered to be “hot” all peak at different times; more specifically, each one is 120 degrees behind the one that came before it.

When working with a single-phase voltage of 120/208 volts, you may utilize any two of those same three hot conductors, but the peaks of the two waveforms must be offset by 120 degrees from one another.

Due to the fact that the peaks of the two waveforms occur at separate times, the total power that you obtain from them is less than the sum of their numerical values.

The voltage measured by one waveform is at its highest point when it is 120V, whereas the voltage measured by the second waveform is just 88V when it is only halfway through its cycle

. The total combined voltage is 208V. If the two waveforms were coincidental, meaning that their maxima occurred at the same moment, then you would, as you would anticipate, be able to achieve 240V by adding the two 120V peaks together.

See also  Optimal 5GHz Wireless Camera Trending In The Market.

Make-Before-Break Switches Are Used as A Maintenance Bypass.

In the case that the UPS has to be serviced or replaced, this device will open up a way for the protected equipment to be powered by the utility power in the event that this channel is needed.

It totally disconnects the UPS from the power supply, which eliminates the risk of the service personnel receiving an electric shock while they are working inside the UPS.

This switch is required by Motorola for all hardwired uninterruptible power supply (UPS) systems because it enables the UPS cabinet to be entirely removed and changed without requiring the protected equipment to be powered down.

The Make-Before-Break (MBB) switch overlaps the power on the “UPS” line with the utility power on the “Bypass” line whenever the switch handle is moved.

This brief overlap does not create a problem since it lasts for such a short period of time; yet, it is essential because it allows the switch-to-switch sources without disrupting the operation of the equipment that is being safeguarded.

Transformer for removing Signals

This device, which may be an integral part of the UPS or an entirely distinct unit, transforms the electricity from the utility company into power that has been cleaned and conditioned.

In situations in which the power from the utility company is described as “dirty” or “harsh,” you should make use of an uninterruptible power supply (UPS) that has isolation in order to provide your equipment the highest level of protection possible.

According to Motorola’s R56 Standards, uninterruptible power supply (UPS) systems that contain isolation are regarded as independently derived power sources.

(The page titled “Isolation Explained” in this section provides a more in-depth description of isolation transformers; please refer to it for further information.)

According to Kirchhoff’s Law, the amount of power that goes into a circuit must be equal to the amount of power that comes out of it. This includes transformers, in which the power on the primary side (which is the input side) must match the power on the secondary side (which is the output side).

Transformers are only able to manipulate the power that is already there; they cannot “create” new power. If you put 120 volts in, you will get 120 volts out; if you put 208 volts in, you will get 208 volts out; if you put 240 volts in, you will get 240 volts out; and so on.

See also  Does A Smart Home Increase Your Home Value With These 6 Quick Upgrades?

Putting Everything into Perspective

When electricity with a single-phase voltage of 120/208 volts is fed into an isolation transformer, the two distinct hot conductors of 120 volts are merged into a single waveform of 208 volts.

We need to divide the 208V back into two 120V conductors so that we can power the majority of the Motorola equipment, but this cannot be done since the voltage is too high.

As was said before, the amount of power that is put in must be equal to the amount of power that is taken out without producing anything brand new. Only 208 volts of total voltage are available when the single 208-volt waveform that is coming out of the transformer is divided into two conductors.

Additionally, the peaks of both conductors occur simultaneously. It is impossible for any piece of machinery to make use of the remaining 88 volts of power once one 120-volt wire has been generated.

Because 240V can be divided equally between two 120V conductors, this problem may be solved by setting the output of the UPS to 240V, which is the obvious approach. If there wasn’t a maintenance bypass option for the Make-Before-Break feature, this would be successful.

The electricity from the utility (120/208V) and the power from the output of the UPS (120/240V) are superimposed on one another whenever that switch is activated.

A magnetic “crash” will occur as a direct consequence of the disparity in phase angles between the two voltages, which will cause the circuit breaker that supplies power to the UPS to trip.


Since 120/208V input is not possible in isolated UPS systems and the UPS output must be 120/240V to prevent the “88V leg,” the input voltage must be 120/240V. If this is already present at the location, then there is really no need to worry about anything in this regard.

On the other hand, if the voltage at the site that feeds the UPS is 120/208V, you will have to modify it to 120/240V. Both the FERRUPS and the 9170+ UPS systems are capable of achieving this goal in their own unique ways.



Because the FERRUPS incorporates a ferro resonant transformer as the primary component of its construction, every single model comes included with an internal isolation system.

This indicates that any and all FERRUPS models that might potentially be powered by a 120/208V circuit would be impacted by this issue.

See also  What Is Use Of Bluetooth amplifiers? Are They Useful?

When searching for a FERRUPS model number, it is important to keep in mind that models 3,000W and above may be set up as either 208V or 240V source systems, and you will need to choose the one that is most suited for your needs.

The main difference between the two lies in the fact that the 208V source systems use an external transformer, which brings the input voltage up to 120/240V.

You have the option of using the Break-Before-Make (BBM) maintenance bypass switch rather of the step-up transformer. When the switch is activated, the BBM switch does not overlap the output feeds coming from the utility and the UPS, which results in a power interruption.

Because the electricity will be cut off and any equipment that is still running will be destroyed, it is imperative that any equipment that is protected be turned off first.

Because Motorola maintains the position that the protected equipment should never be turned off, not even for maintenance on the UPS, the BBM is not available in any regular model configurations.

If the external transformer is not a solution that can be implemented, SEPS can provide you with an estimate for a customized configuration.


For all versions that have a “ISO” appended to its name, the 9170+ comes standard with an external isolation transformer. The output of this external transformer is set to 120/240V, and it may accept electricity at either 120/208V or 120/240V via its various input taps.

Because this transformer supplies the isolation and outputs 120/240V to the bypass switch, none of the two difficulties discussed before is relevant.

Power may be provided to the 9170+ at either 120/208V or 120/240V, depending on whether or not it is fitted with an isolation transformer. All of the problems that were discussed before are resolved when the transformer is not there.

If the location where the UPS will be installed has electricity that is 1220/240V, then you have the option of going with an internal isolation transformer rather than going with an external isolation transformer (for more information, see the component number listings for the Power ware 9170+).

Using this feature makes the 9170+ extremely similar to the FERRUPS, including the 88V leg and phase angle mismatch, therefore it is only accessible with a 240V supply.

SEPS suggests that you do not choose for the internal transformer in order to err on the side of caution if there is uncertainty about the site voltage.

Continue Reading