We are offering gsm / gprs modem( sim 900 ). Triband (900mhz/1800mhz/1900mhz) gsm-gprs modem with plug and play operation with on board rs232 interface for communication and follows standard at command set. for more details please see the attached datasheet.
We are offering gps modem (usb interface). features:1. Can be connected with usb. 2. Power supply 4.5 volts to 5 volts. Check attached data sheet for more details.