Features: 1.Feature: Applicable to 12V voltage power supply vehicles, strong compatibility, can be installed in vehicles with anti theft alarm, with anti theft and anti robbery dual function selection. 2.Perfectly Configured: Inductive detection range of 2?8m, and the sensing distance can be adjusted freely, with built in 210mAh 3V CR2032 button cell battery ensure long lifespan. 3.Anti Theft Robbery: When the vehicle does not detect the inductive card, the car cannot be started after prying the door open, and will automatically stall when driving, then the vehicle cannot be started again. 4.Other Functions: The emergency release function is used for car washing, maintenance, or emergency release of anti theft, and remote control sensor low voltage alarm function. 5.Click Start Button: With push start button can start or stop your vehicle easier and no need to insert the key into ignition cylinder any longer once properly installed. Specification: Item Type: Car Keyless Entry System Material: ABS Battery: 210mAh CR2032 button cell x 2 (built in) Automatic Sensing Range: Approx. 2-8m/6.56-26.25ft Application: Universal fit for 12V car