RioRandGPS103B TK103B Vehicle GPS/ SMS/ GPRS Tracker Vehicle Tracking System (Only applies to GSM card 2G) Powered by RioRand Advanced Technology It supports both GPS locating and GSM locating. When there is GPS signal available, it will use GPS signal to locate your tracking target. Once there is NO GPS signal such as in the garage, BUT there is GSM signal received from a GSM modem nearby, you can send the tracker SMS to get its location and coordinates. Dialing the tracker device, it will respond to a real-time latitude and longitude information;Storage Temp: -40C to +85C; Operation Temp: -20C to +55C ; Humidity: 5%--95% non-condensing The remote control is unique. Each TK103B tracker has JUST ONE remote control to pair. Please take care of this remote control with attention! Package: 1 * GPS/GSM/GPRS Tracker TK103B & 1 * GPS Antenna & 1 * GSM Antenna & 1 * Remote control & 1 * Harness & 1 * Microphone & 1 * Relay & 1 * Software CD & 1 * User Manuals