This is a small (38x35x10 mm) and very light weight (20gms) transmitter which can be used to listen in on sounds from anywhere in the world as it works on the GSM base station. Not only is this device easy to use and program but it offers reliability and convenience as well. Its multisocket is not powered by battery but works on a 220V mains. It is also very light in consumption as it needs only 200mA when running and a 20mA on standby.

It can be easily programmed via SMS from any distance away. You can program up to 3 numbers in it and go for automatic call when its sensor detects voices in its vicinity which means as soon as it hears sounds in the area it automatically places a call. You have the feature to disable call waiting via SMS.

In fact, not only does the inside of the transmitter allow you to hear background noise from any distance by dialing the number of the SIM card inserted inside, but it also lets you know with a phone call (VOX Circuit) that dials your number when it hears a sound or voice, so that you can safely listen, when necessary, without anybody realizing.

The call waiting can be disabled via sms.

It has a highly sensitive microphone and consumes only 20mA on standby and 200 mA at full stretch.

The multisocket does not run on batteries as it is directly powered by a 220V mains circuit.

The reduced size of the GSM transmitter allows concealment in objects* such as:

Detail of the unlimited distance GSM Audio transmitter's SIM Card housing

Technical Characteristics


• Working frequencies: 900/1800/1900 Mhz
• Power out: 2W max
• Microphone: -33dba
• Power supply:220 Vac
• Internal battery: 3.6V ,700 mAh, NiMh
• Emission frequency: GSM TRIBAND 900/1800/1900 MHz
• Dimensions: variable
• Antenna :interna
• Weight: variable

Small sized unlimited distance GSM Audio transmitter GSM-TRB

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