The central door lock system is automated and has a warning function that the door is not closed. It can anti-hijack and seek help. With LED indicator light, receiver check code (learning code), electric or pneumatic central door lock, door trigger (negative signal), mute arm, arming reminder, intrusion warning, this product is multifunctional. Made of high-quality ABS and metal materials, the product is not easy to damage and has a long service life. The length of this product is 8.8cm, width is 7cm, height is 2.7cm. It is suitable for vehicles, car, auto, truck and so on. Item Name: Anti-theft Device Material: ABS,Metal Batteries: CR2032 Button Battery (Not Included) Output Current: Turn signal: 7.5A x 2, LED Indicator: 3mA, Siren: 10A, Central Door Lock: 10A Operating Temperature: 40 to 80 degrees Celsius Operating Voltage: Main Control Unit: DC12V + / -3V, Remote control: DC12V Vibration sensor: DC12V + / -3V Quiescent Current: Remote Control: 0mA, Vibration Sensor: 1mA Working Frequency: 433.92MHz Model: 802-8127 Size Details: 8.8cm x 7cm x 2.7cm(Approx.) Notes: Does not contain button batteries, need to be purchased separately The button battery model is CR2032. This product needs to be professionally installed by car electrician certification. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Main Control Unit 2 x Remote Control 1 x LED Light Emitting Diode 1 x Engine Killer Relay 1 x Vibration Sensor 1 x Siren 1 x Wiring Kit 1 x User Manual