This is a set of car immoblizer system. Its smaller, the remote control is light and thin, and the new micro-electric technology brings you more safety and installation is very simple, directly unplug the oil circuit fuse in the engine compartment of the car, and plug our main unit directly into the replacement to complete the installation. Just fix it and cover the engine cover and you can use it. The remote control comes with Auto-sensing function, no need to operate, you can put the remote control in your wallet or pocket, no one will notice, you can refuse gracefully borrowing car from others, or preventing thieves from stealing car. Features: Small size remote contro for easy carrying. Suitable for various 12Volt car and motorcycle. Simple installation, bring safety to your car. Anti-robbery intelligent automatic induction without card swiping. If the car does not receive the signal from the remote control within 16 seconds after starting the car, the engine will turn off. The car can turn on normally if it receives the signal from the remote control within 16 seconds of starting. Even if it no longer receives the signal from the remote control, it will not turn off. LED indication function: when receiving a remote control signal, the LED flashes once, indicating that the signal is normal, and no signal will not flash. Specifications: Unit working voltage: 12V±3V Unit quiescent current: ≤12mA Unit control current: ≤30A Remote control operating current: ≤3~8mA Remote control standby current: ≤1uA Remote control battery specification: CR2032, 3V, 240mAh Remote control frequency: 433.92MHz Unit size: 48 * 26 * 15mm / 1.9 * 1.0 * 0.6in Remote size: 33 * 33 * 5mm / 1.3 * 1.3 * 0.2in Package size: 165 * 92 * 48mm / 6.5 * 3.6 * 1.9in Package weight: 200g / 7.1ounce Packing List: 1 * Host Unit 2 * Remote Controller 1 * User Manual