... Module SIM4100 SIM4000B 1,GSM/GPRS module2,wireless module3,simcom GSM/GPRS Module SIM4100 SIM4000B SIM4100SIM4100 is a dual- ... Based upon mature and field-proven platform, backed up by SIMCom support service, from definition to design and production General features ... Weight: 15g • AT commands (GSM07.07, 07.05, 3GPP and SIMCom enhanced AT commands) • SIM application toolkit • Battery voltage range: 3 ...