rs485sim900

RS485 GSM/GPRS Modem SIMCOM SIM900 Module GSM/GPRS Modem GSM/GPRS/GPS Modem SIM900 Module/Modem RS485 GSM/GPRS Modem Based on SIMCOM SIM900 Module Product description:General FeaturesIndustrial designAluminum casingWireless access to internetBased on SIMCOM module SIM900 With TCP/IP protocol stack850/900/1800/1900MHZComply with ETSI GSM phase 2+1.8V-3V SIM card slotRS485 interface:PIN 1 for 485+ ...