GSM/GPRS TTL -Modem from rhydoLABZ is built with SIMCOM Make SIM900 Quad-band GSM/GPRS engine, works on frequencies 850 MHz, 900 MHz, 1800 MHz and 1900 MHz. It is very compact in size and easy to use as plug in GSM Modem. The Modem is designed wi

this a circuit and avr program for shut down and start device a far way with sms. -this is a circuit and avr program for shut down and start device a far way with sms.

SEND & RECIVE SMS WITH AVR