One push button to start/stop the engineRFID engine lockIn arming mode,when the key gets close to the detection circle(about 2-5cm),the system will sound Bi Bi,which indicates the system is disarmedOtherwise,the start button will not work. Open acoustics and dashboard functionAutomatically lock the host after stalling 30 secondsImmobilizer,with warded lock card anti-theft function,the system will enter arming mode after 15 seconds automatically when car is stopped. Guarantee safety without another operation while driving,Compatibility with current smart keys and starting alarm system,Protect the risk with anti-theft system Voltage:12V Colour:Black material:plastic Packing size:17*145*5cm Package Contents: 1 set * car keyless entry burglar alarm Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.