GPS Camera Tracker& Navigation with taximeter and printer 1. Screen 2.Remote controlling oil & circuit 3.Two-way communicatio hotsale- ... function of automatic deadlock is equipped as scheduled, with a screen flicker as warning before the deadline.8,Management software is ... : ±10s/d6,Positioning precision: no more than 15 meters ( at probability more than 95%)7,GPS speed precision: no less than ...