RS232 GSM/GPRS modem Based on SIMCOM module SIM900 With TCP/IP protocol stack ... /900/1800/1900MHZ SMS,data, STK, internet RS232 GSM/GPRS modem can be used for SMS Gateway Lift Monitoring Traffic Light ... +85 degreesSize 85*54*25mmWeight 110gAccessories: AC/DC adaptor,RS232 cable, antenna, 2 mounting plates, CD Specification for DataGPRS Class 10 ...