... GSM GPRS module, Quad-band, industrial standard Sim900,SIM900 Simcom wireless module,Simcom modules,modulesGeneral features * Quad-Band 850/ 900/ 1800 ... ... 4.8V* Low power consumption: 1.5mA(sleep mode)* Operation temperature: -40°C to +85 °C Specifications for Fax* Group 3 ... * Antenna pad* I2C* GPIO* PWM* ADC GSM/GPRS module SIM340 Wireless modules