Practical GPS GSM GPRS Tracker Vehicle Tracker Car Locator Locate Track Monitor Tracking Device 1) Product Features: Practical vehicle tracker High sensitivity GPS receiver chip Built-in high sensitivity GPS antenna, super reception Highly integrated design, with dual built-in antenna (GSM, GPS) design Built-in switching power supply, wide voltage input range Built-in vibration sensor, to achieve intelligent vehicle anti-theft Support ACC detection, vehicle start alarm An external relay, remote control vehicle fuel and electricity Specific numbers can be set three alarm and burglar alarm for SOS SOS alarm button can be connected for emergency calls for help An external microphone, remote voice monitoring function Built-in backup battery, illegal cutting line to achieve the alarm Compatible with external serial communication device GSM quad-band system of global common 2) Product Specifications: GSM Frequency: 8509001,8001,900MHz GPS Chips: SIRF Star III GPRS: Class 12, TCPIP built-in GSM module GPS Channels: 20 Tracking Sensitivity: -159dBm Acquisition Sensitivity: -144dBm Locating Time Cost: ---Hot Start: