GSM Telealarm with anti-Jammer

GSM telealarm and remote control system with anti-Jammer function, to be paired with any burglar alarm installation. The device can work either in the traditional way (much like the TDG133) or in anti-Jammer mode (in which case two boards are needed). The system guarantees the highest level of security by periodically checking that the radio link is working properly: if it is tampered with or jammed, the second GSM unit takes over and sends the alarm messages. All settings are made by SMS or locally from a PC (through the optional FT782M interface). Power supply between 9 and 32 Vdc, maximum current draw 1 A. The pack contains: the device, assembled and tested, with the GSM module based on the SIM800C and the antenna (8170-ANTGSMSTL-S01).

The device works on the GSM network only. As it cannot operate on UMTS, it is not compatible with any SIM that works solely on that network. It therefore works without problems with SIM cards from Wind, TIM and Vodafone, but it cannot be used with SIM cards from 3.

The anti-jammer sets up a point-to-point GSM link between two devices that keep in touch with periodic calls: loss of communication is treated as an alarm condition. This way, if the master is prevented from calling, the slave starts alerting all the stored telephone numbers.
To keep the link alive, the master calls the slave and the slave rejects the call. The slave treats this as a “successful communication”, since only the slave could have rejected the call. As no connection is ever established, the procedure costs nothing to run, provided that all call diversions to another number or to voicemail are disabled on the slave GSM SIM.

• Frequency bands:
  – Quad-band: GSM 850, EGSM 900, DCS 1800, PCS 1900. The 4 frequencies can be searched automatically or set with the AT command “AT+CBAND”.
  – Compliant to GSM Phase 2/2+
• Transmit power:
  – Class 4 (2 W) at GSM 850 and EGSM 900
  – Class 1 (1 W) at DCS 1800 and PCS 1900
• Power supply: 9 to 32 Vdc (1 A); or a lithium-ion battery of 800 to 1,000 mA/h

• For the drivers (Driver USB.zip) – For the updated driver version http://www.ftdichip.com/Drivers/VCP.htm
• Driver installation procedure for Windows XP and Windows 7
• For the software (Configuratore TDG.zip Multi Language)
• Enabling administrator control in Windows 8/10

• The device does not answer messages. When a message is sent, the LEDs give no sign that it has been received
  Check that there is credit on the remote control SIM. If there is credit, turn off RCS chat on your smartphone. To turn RCS chat off, go to “Messages > Message settings > RCS chat” (if you cannot find this menu, refer to your phone’s guide to disable the function).