GPS Camera Tracker& Navigation with taximeter and printer 1. Screen ... can be set at users’ options.10,Module GPS/GRPS is set to transfer management data automatically. ... ,Support TCP, UDP, SMS to convey positioning and alarm messages. 12,Precise positioning: error less than 15 meters ... -boot time: less than 90 seconds16,Emergency and alarm function17,Anti excess voltage, preventing power supply polarity ...