RS485 GSM / GPRS Modem Based on SIMCOM SIM900A Module

RS485 GSM/GPRS Modem Based on SIMCOM SIM900A Module Detailed Product Description RS485 GSM/GPRS Modem SIMCOM SIM900 Module GSM/GPRS Modem GSM/GPRS/GPS Modem SIM900A Module/Modem Product Description: General features: Industrial design Aluminum casing Wireless access to internet Based on SIMCOM module SIM900A With TCP/IP protocol stack 900/1800MHZ Comply with ETSI GSM phase 2+ 1.8-3V SIM card slot RS485 interface: PIN 1 for 485+B PIN 2 for 485 -A SIM Application Toolkit Double