RS485 GSM/GPRS Modem SIMCOM SIM900 Module GSM/GPRS Modem GSM/GPRS/GPS Modem SIM900A Module/Modem RS485 GSM/GPRS Modem Based on SIMCOM SIM900A Module Product description:General ... degreesSize:85*54*25mmWeight:110gAccessories: AC/DC adaptor, RS485 cable, antenna, 2 mounting plates, CD Specification for ... Specification for FaxGroup 3, class 1 RS485 GSM/GPRS Modem Based on SIMCOM SIM900A Module