asd GSM quadriband audio transmitter
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GSM quadriband audio transmitter

GSM quadriband audio transmitter
Brand: Endoacustica
Product Code: GSM-002

This is a professional GSM quadriband audio transmitter equipped with two stereo microphones. It's perfect for ambient locations such as vehicle or domestic room, remote unlimited audio surveillance. Equipped with two microphones for a perfect audio reception. The system allows to listen to ambient or vehicles from any distance. With its minimum size, it can be easily concealed in any vehicle or domestic environment, electrical outlets, switchboards, junction boxes or in small household appliances.
The transmitting audio is developed by a powerful DSP (digital signal processor) that reduces and eliminates noises and rustles whether in any environment. The firmware allows the complete real time management of sound. It's possible to modify remotely its algorithms parameters and also activate or not two independent Hi-pass and Low-pass filter.
They are available 2 otophone type microphones that can be selected individually or coupled with a "pseudo stereo" function that activates them both. It is possible to set up 2 programming thresholds of internal DSP to reduce noise in the cabin, for moving and stopping vehicles. Another special functionality is the “Dynamic Mik”, enables on board and external microphones to be switched automatically for example when the vehicle is stationary.

Technical characteristics

   Frequencies: Quadri Band GSM 850/900/1800/1900 MHz
   RF Power: 2W Class 4 (900 MHz) – 1W Class 1 (1800 MHz).
   SIM: Slide SIM card reader
   SMS: Text
  VOX Function: Adjustable.
  FILTERS Function: Independent Hi-pass and Low-pass filter settings.
  DSP functions: Noise reduction regulation, echo deletion, audio in signal processing etc...
  Power supply by battery: 7-26 Vdc 7-26 Vdc internally stabilized trough a high efficient switching power regulator, 3,6 Vdc direct
  Power supply by electrical current: can be directly powered by 220V electrical current by means of its adapter. Ideal to be concealed into sockets etc.
  Current consumption: 3,6 Vdc = 75mA sleep, 200mA
  Transmission "speak": 12 Vdc = 30mA sleep, 100mA transmission “speak”, 18 Vdc = 22mA sleep, 69mA transmission “speak”, 24 Vdc = 18mA sleep, 42mA transmission “speak”, 26 Vdc = 17mA sleep, 40mA transmission “speak.
  Microphones: 2 otophone type microphone - Antenna GSM: on board / patch / SMA. - Connections: Power supply with red (+) and black cable (-). Cables type microphones anti rip in steel and double shielding.
  Operating state: Intermitting red LED signal.
  Sensors/Parameters: Parameters regulation of the accelerometer with time thresholds/movement through SMS.
  Weight: 30 g approximately.
  Dimensions: 40 x 39 x 9 mm.


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