GSM/GPRS SIM800A + Quectel L80 TTL Combo Modem


Hardware Specifications

  • SIM800 Quad Band GSM Module
  • Quectel L80 ultra compact GPS POT
  • Voltage Supply- 3.7VDC to 4.2VDC
  • GSM- Speaker, Mic, TTL Rx and TTL Tx Outputs
  • GPS- Tx output
  • Provision for GSM and GPS Antenna
  • Size 55mm X 35mm



  • GPRS Connectivity for serial/legacy devices such as Energy Meters, SCADA Systems, PLC, Machine Automation devices, RFID etc.
  • L80 has exceptional performance both in acquisition and tracking
  • Accurate timing for clocks and other systems from GPRS
  • GSM/GPRS based reporting systems
  • GPS Ultra low power consumption in tracking mode, 20mA

Unique Advantages

  • This device is completely our own development
  • Almost any modification that is possible can be done on custom requirement
  • Tested for reliability and ruggedness
  • Repairable
  • Made in India

GSM SIM800A modem is a complete GSM/GPRS solution in an LGA type which can be embedded in the customer applications. SIM800A support Quad-band 850/900/1800/1900MHz, it can transmit Voice, SMS and data information with low power consumption. Featuring and Embedded AT, it allows total cost savings and fast time-to-market for customer applications.

Quectel L80 is an ultra-compact GPS POT (Patch on Top) module with an embedded patch antenna.  Adopted by LCC package and integrated with the patch antenna, L80 has exceptional performance both in acquisition and tracking. L80 supports automatic antenna switching function. It can achieve the switching between internal patch antenna and external active antenna. Moreover, it keeps positioning during the switching process.