GSM Double Plug Adapter

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Every home and office uses an AC mains plug adapter to power appliances in the normal manner, but not all offer superhuman listening ability.  Simply plug the AC adapter into any mains wall socket and dial the associated SIM card fitted inside from any mobile or landline to clearly hear the surrounding audio.  Mains operated for unlimited use and optional sound detection feature notifies your smartphone.  Works worldwide.

Mains Powered GSM Plug Adapter; with LIVE Audio Listening & Sound Detection

The GSM Double Plug Adapter powers home and office electrical items in the normal manner however, fitted inside is a high sensitive audio microphone and GSM SIM card so you can, at any time, dial the SIM number from your smartphone or landline and listen to the surrounding room environment.

There are no distance restrictions - you can call the SIM number inside the adapter from anywhere in the world and the microphone can clearly pick up audio 25 feet away where the AC adapter is situated.  Audio quality is excellent - no humming, no cracking and no mains interference feedback.

The AC Listening Plug Adapter can be visually examined because externally, it is a normal looking adapter.  There are no batteries or recharging required, thus providing extremely long term audio surveillance.

Please be aware of poor quality products.  In principle they work, but cheap prices encourage shoddy workmanship.


This feature can be enabled / disabled by sending a coded SMS from your smartphone to the adapter.  Once enabled, the microphone monitors audio levels and calls your smartphone when sound is detected.  Sound detection is a smart way to understand when something may be untoward at your premises when you are absent.


Why not consider recording audio for evidential purposes?  The iPhone / Smartphone Mobile Call Recorder is a little recorder that plugs into the jack socket of any mobile phone (jack socket required) allowing you to record the call onto the memory of the device.  Its also excellent for recording general conversations or important phone calls too.  To play back recorded audio, simply connect the Smartphone Call Recorder to a Windows or Mac computer via the supplied USB cable.

The GSM Listening Plug Adapter is a high quality product suitable as an additional security for your home / office / caravan / holiday home etc.

More Information
Can I use the plug adapter to power other electrical items?

Yes.  The plug is fully functional and operates just as a normal plug adapter.

How do I listen into my office?

Simply plug the adapter into any wall socket and then call the supplied SIM card number.  The microphone will enable and you will then be able to hear very clearly and monitor the audio surroundings where the plug is situated.

Instead of calling in all the time, can I get notified by the adapter when audio is detected?

Yes.  You will need the sound detection feature which we can implement for just £5.00 and can be purchased from the drop down menu.  This feature can be enabled / disabled remotely from your mobile phone by sending a simple coded message to the adapter.

What if I go overseas?  Can I still monitor the room back home in the office?


Will the adapter still work if it is removed from the wall socket?

No.  The plug obtains its power from the mains wall socket.  There are no batteries or recharging required with this unit.

Can I hear the entire room?

Yes.  The audio microphone is very sensitive which clearly picks up sound in almost all standard room sizes.

Will I hear buzzing noises or fuzzy mains feedback when listening in?

No.  The adapter is a high quality listening device built by professionals.

How long can I listen in for?

As long as you want to.  Bear in mind, your call to the adapter is the cost of a standard call to a SIM card.

When I call the number it goes to voicemail?

The SIM card is struggling to get a GSM signal.  Please change the SIM card to a different network with a better signal strength or move the plug to a different position.

Can I use the plug adapter outside the UK?

It is designed for use by 3-pin wall sockets operating 220 – 240 Volts.  If you require a device for your country please also see our European and USA audio plug sockets.

Technical Info
  • Fully functional mains powered adapter
  • Professionally hand built
  • Powers from the electrical mains supply
  • No batteries or recharging required
  • Unlimited standby time
  • Dial and listen from anywhere in the world
  • Optional sound detection feature
  • Record audio – using the iPhone / smartphone mobile call recorder (separate purchase)
  • No LED’s / sounds / vibrations / moving parts – completely normal appearance
  • Quad-band worldwide operation – 900 / 1800 / 1900 / 1950 MHz
  • Audio microphone – approx 25 feet
  • Supplied with GSM adapter, SIM card and User Guide
  • Ideal to monitor the audio environment of your home / office for safety or evidential purposes
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