
VVM-618 has a highly sensitive SiRF star III G-Mouse GPS receiver, industrial class high-stability GSM/GPRS Module, obtains functions such as tracking & positioning, vehicle status checking, abnormity alarm, auto-lock for backout-proof, auto Radio Frequency Identification, GPS signal self-supply, voice calling, voice broadcasting, message receiving/sending, vehicle control, image taking, vehicle owner self-control, temperature inducting, oil level inducting.