1. Specially design for gsm network anti-theft, with strong function and stable performance. 2. Quick alarm, sending alarm automatically after the car anti-theft alarm rings. 3. No limited alarm distance, the owner can take alarm call or remote-control it anywhere with gsm signal. 4. It can cut off the fuel and power of car by phone. 5. The situation in the car can be monitored by phone. 6. The normal and urgent alarm phone number can be installed. The time of ringing last till withdrawal or the alarm call is put through. 7. It is equipped with standby power in it; Even the power is shut, it still do its work. 8. The technical-grade module is used in it. 9. The location inquiry can be conducted by phone message (for this function, the support of the network operations and service centers is needed ). We have so many global certificates and the great quality is guaranteed. Normal colorful box: Package dimension(l*w*h): 29cm*26cm*10cm gross weight: 1.5kg/pc Working voltage: 12v +or -2v static electric current: 40ma-60ma. Band: Gsm900/1800mhz channeling line interface module level: 2.8v. Module upstairs electric current: 11-25ma. Shock sensor electric current: <1ma output frequency: 300mhz-350mhz. Storage temperature: -30---+85 working temperature: -25--+85. Static electric current: 0ma. Battery no.: A27 output frequency: 300mhz-350mhz. Working humidity: 25%--95%.