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Basic board to create, in combination with the FT1308M and FT1128M (not included), a complete GPRS modem to make data connections, calls, send sms. For example, it allows the use of GPS / GSM or GSM-only locators in point-to-point mode so as to instantly obtain positioning data and then follow movements directly. It allows direct data connections with another modem or mobile phone equipped with a modem, but without going through the web: connections are made directly on the GSM data channel. The board has a socket for a loudspeaker and one for a microphone with which, for example, establish communication. The module is interfaced with a USB converter capable of allowing its management and communication through any USB port on a computer, tablet or device that has the host-type USB interface, including many types of microcontrollers. The module that realizes the GSM / GPRS connection and therefore the heart of the modem is to be chosen from the 3 modules indicated above, which can be used both for Internet access and for voice communication (as long as you connect a microphone and a small speaker) and SMS .

Technical characteristics of the module with SIM800C

The module that makes the GSM / GPRS connection and therefore the heart of the modem is the SIM800C of SIMCom: it is one of the most recent Quad-band GSM / GPRS compatible cellular modules, operating on the frequencies of 850/900/1800 / 1900MHz, can be used both for Internet access, both for voice communication (provided you connect a microphone and a small speaker) and SMS. Externally it comes in a large package 24mm x 24mm x 3mm with contacts placed on the four sides and L-shaped so that they can be welded to the side and below. The module is internally managed by an AMR926EJ-S processor that manages telephone communication, data communication (via an integrated TCP / IP stack) and dialogue (via a UART and a TTL serial interface) with the circuit to which the mobile phone interfaces .

The processor also takes care of managing a 3 or 1.8 V SIM to be mounted outside the module.

  • GSM / GPRS module: SIM800C
  • Frequency band:
    - Quad band: GSM 850, EGSM 900, DCS 1800, PCS 1900. The 4 frequencies can be searched automatically, or set via the AT command "AT + CBAND".
    - Compliant to GSM Phase 2/2 +
  • GPRS connectivity: multi-slot class 12 (default)
  • Transmission power:
    - Class 4 (2 W) to GSM 850 and EGSM 900
    - Class 1 (1 W) to DCS 1800 and PCS 1900
 
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Base for GSM Modem (Excluded)

  • Price: 9.50€


Tags: Base for GSM Modem

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