LoNet 800L is a mini GSM module that offers 2G GSM and GPRS data. It features small size and low power consumption. Twice size as a coin and the working current low to 1mA when in sleep mode. It uses a serial port communication, supports 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands. Also, it supports A-GPS technique that help get indoor position by the mobile network. Works compatible with Arduino Uno, Arduino Mini, Raspberry Pi. A mini GSM antenna is came with, but an external power supply is required. Features: Quad-band 850/900/1800/1900MHz GPRS multi-slot class12 connectivity: max. 85.6kbps (down-load/up-load) GPRS mobile station class B 3GPP TS 27.007, 27.005 and SIMCOM enhanced AT Commands Real Time Clock Power voltage 3.4V ~ 4.4V DC A-GPS (Assisted Global Positioning System) Supports 2.8V to 5.0V logic level Low power consumption, 1mA in sleep mode Compact size 23mm x 35mm x 5.6mm Standard SIM Card Part List: 1 x LoNet 800L - Mini GSM/GPRS Breakout 1 x mini GSM antenna Please visit our blog page for more information. For any technical support and suggestions,please go to our forum.