Fangrui Product Details 1. Suitable For Any 12v Cars 2. Wide Compatibility (can Be Installed On Vehicles Equipped With Anti-theft Alarms) 3. Induction Detection Range 2-8 Meters 4. The Sensing Distance Can Be Adjusted Freely 5. Dual Function Selection Of Anti-theft And Anti-robbing Anti-theft Function: When The Vehicle Cannot Detect The Proximity Card, The Car Cannot Start After Opening The Door. Anti-robbing Function: When The Vehicle And The Vehicle Do Not Detect The Induction, The Vehicle Automatically Shut Down And No Longer Start The Vehicle. Release Mode (function Selection: Car Wash, Maintenance Mode) Low Voltage Warning Function (when The Internal Battery Voltage Of The Proximity Card Is Too Low, The Buzzer Prompt After The Vehicle Is Started) Small Size, Easy Installation, Strong Concealment 2.4ghz Frequency, Less Interference And Energy Saving. The Proximity Card Uses A Large-capacity Cr2032 Battery Applicable Vehicle Model:any 12v Car Colour:black Material:plastic Package Contents: 1 X Alarm 2 X Sensors 3