GPS/GSM Car Tracker INTRODUCTIONFunctions and Features >Apply to protect all type of cars, trucks, taxi, jeeps as well as other automobiles.> Simple installation, and no affection to the existing alarm system.> The microwave sensor detects intrusion includes: door opening, window breakage, and motion inside the car> Auto arm or manual arm by phone> Disarm by hang up phone> Locating and tracking-Dual location:GPS Location tracking data report to monitor center by SMS/GPRSlocate your vehicle through both GPS positioning and GSM base station-Query locating information by SMS/ computer or via website-Real-time or pre-set time tracking by SMS/GPRS;-Global Track Web-based center with Google-earth or Google-Map support and clear satellite image view-GEO, Over speed and Move Alert> SOS: pressing the hidden button, hi-jack alert to recipients> Monitoring / speaking by MIC / SPK.> Power down alert: auto-SMS to the preset phone> Stop engine remotely> Support by car battery or 12V LI battery to work> With backup battery(4.2V): after Power Failure Alert, it will supply power for tracking and GSM.Technical Specification > GSM Work Frequency:850 /900 /1800 /1900MHz> Microwave sensor: sending power<3mw> Temperature: Working Temp -20°c +60°c > Humidity: 20—95% > GSM Antenna Cable type: Gain: 3dBi cable-length:3-5meters connector :SMA Portable antenna: Gain: 2dBi height: 5cm connector: SMA > GPS Antenna: Voltage 3V cable-length: 3-5 meters connector: SMA > Stop relay: 12V/24V 40A > Mainframe Power supply: 12/24V DC > Backup battery: Poly-Li battery, 950mAh 3.7V > Mainframe Dimension: 110x70x23mm > Weight: G.W.:0.5Kg/set (including accessories) Safety Instructions > Please do not use the device in the areas where wireless device uses are prohibited. > Please use the accessories in the package, such as the antennas and relay.