CR20-2G GPS basic function - Internal Antenna

CR20 is vehicle tracker, with GPS and GSM location service. CR20 is a quad-band GSM/GPRS/EDGE that works on frequencies of GSM 850MHz, EGSM 900 MHz, DCS 1800 MHz, PCS 1900MHz. The device could be monitored by server or user mobile phone APP.
CR20 has multiple input/output interfaces that can be used to monitor vehicle status or connect external device. User can setup device working parameter by PC setup program base on personality application. CR20 works with embedded GPS antenna and embedded GSM antenna, Embedded GPS antenna can switch to external GPS antenna while it is connected.