Feature 17 Level Sensitivity: This alarm set has 7 level sensitivity for you to adjust, the 7th is the highest sensitivity so you can adjust it according to your needs. 2Car Search Function: You can press the \"mute\" or \"bell\" button and the sounds 30 seconds and you can press any button to stop. 3A full Accessory Set: This alarm set includes a complete set of tools required for. 4You can press the learning code switch on the main unit inside, and press any button on the remote, the alarm will sound once, indicating that the learning code is successful, and the second remote learn code as first one. 5Wide Applications: This alarm set can be installed to most 12 V direct current car and has a wide applications.This 12 V car alarm system has 7 level sensitivity for you to adjust, after installing it, you can better protects your car. You do not need to cutting wires to install it. Come and have a try, it will not let you down. Features: 7 Level Sensitivity: This alarm set has 7 level sensitivity for you to adjust, the 7th is the highest sensitivity so you can adjust it according to your needs. Car Search Function: You can press the "mute" or "bell" button and the sounds 30 seconds and you can press any button to stop. A full Accessory Set: This alarm set includes a complete set of tools required for. You can press the learning code switch on the main unit inside, and press any button on the remote, the alarm will sound once, indicating that the learning code is successful, and the second remote learn code as first one. Wide Applications: This alarm set can be installed to most 12 V direct current car and has a wide applications. Specifications: Material: plastics Working voltage: direct current 12 V±3V Static current:10 mA Working frequency: 433.92MHz Battery: 2 * CR2016 included) Package size: 128 * 96 * 83mm / 5.0 * 3.8 * 3.3in Package weight: 400g / 0.9lb Packing list: 1 * Main Control Unit 2 * Remote Controls 1 * User ManualPackage List1 * Main Control Unit 2 * Remote Controls 1 * User Manual