GPRS GSM GPS Vehicle&Car Tracker Tk103 Tracking Device Engine Stop. Real-time Location Tracking: Shows location on mobile via HTTP Google map link with real street address. Remote Engine Control: Capable of remote engine stop and resume functions for vehicle security. Multi-Geo Fence Support: Allows setting multiple virtual boundaries for enhanced monitoring. Comprehensive Alarm System: Includes door, ACC, shock sensor, power disconnection, and low battery alarms. Voice Surveillance: Built-in microphone enables remote voice monitoring of the vehicle interior. Flexible Tracking Methods: Supports SMS, PDA, computer, website, and iOS/Android APP tracking. Long Battery Backup: Features a 3.7V 350mAh polymer Li-Battery for power loss scenarios. Fast GPS Acquisition: Cold start in 45s, warm start in 35s, and hot start in just 1 second.