Support bands 850/900/1800/1900MHz, easy to track from mobile phone & PC Vibrating Alarm,Anti-Theft Supports single positioning and feedbacks position via GPRS Over-speed Alarm Geo-fence,Track Playback Detailed Product Description 1.accurate positioning 2. for car, truck, taxi, fleet management 3.with backup battery of 250mAh support emergency alarm after power cable cut Using GT20D GPS tracker, you can position ,monitor and control the vehicle on the position server via GPRS,GPS and Internet. It can help you to manage […]