SIM908 module is a complete Quad-Band GSM/GPRS module which combines GPS technology for satellite navigation. The compact design which integrated GPRS and GPS in a SMT package will significantly save both time and costs for customers to develop GPS enabled applications. Featuring an industry-standard interface and GPS function, it allows variable assets to be tracked seamlessly at any location and anytime with signal coverage. Free GSM Antenna and GPS Antenna. Features: Dual SMA Antenna Connector for GSM and GPS, Dual Serial Port for GSM and GPS GSM standard AT Commands, GPS NMEA Protocol, Network and Ring LED Push type Rugged Simcard Holder. Inbuilt 3A Power supply, with input voltage r0ange 5V to 30V A/C or DC RTC Option.