1、Keyless Entry: When the remote is within 2 meters, then system will be automatically in disalarm status and unlock. When the remote is taken out of 3-5 meters,siren will sound one time, then the system will be in alarming status automatically and lock car door automatically under the mute mode, siren not sounds. 2、Mute Arm or Disarm: Manually press remote middle button one time, system is in the mute arm status, if want to exit mute mode, press remote unlock button one time, and then press middle button onetime under the mute mode, no siren sound when trigger alarm. 3、More Function: Detect car situation by itself, rolling code conservation, remote start/ stop engine function, illegal start alarm. 4、Wide Application: Universal type, suitable for most DC12V gasoline vehicles on the market, easy to install. The keyless entry starter is fully functional and practical. 5、Note: Please read the instructions carefully before use. Features: Keyless Entry: When the remote is within 2 meters, then system will be automatically in disalarm status and unlock. When the remote is taken out of 3-5 meters,siren will sound one time, then the system will be in alarming status automatically and lock car door automatically under the mute mode, siren not sounds. Mute Arm or Disarm: Manually press remote middle button one time, system is in the mute arm status, if want to exit mute mode, press remote unlock button one time, and then press middle button onetime under the mute mode, no siren sound when trigger alarm. More Function: Detect car situation by itself, rolling code conservation, remote start/ stop engine function, illegal start alarm. Wide Application: Universal type, suitable for most DC12V gasoline vehicles on the market, easy to install. The keyless entry starter is fully functional and practical. Note: Please read the instructions carefully before use. Specifications: Item: Keyless Entry System Main Material: ABS Color: Black Operation Voltage: DC12V Remote Controller Operation Frequency: 2.4GHz Start Button Outer Diameter: 5.3cm Keyless Entry Starter Size: 9*8.8cm Remote Controller Handle Size: 8*4cm Package Size: 23*13.5*4.5cm Package Weight: 608g Package List: 1 * Keyless Entry Starter 2 * Remote Controller Handle 1 * Start Button 2 * Antenna Cable 1* Some Other Harnesses 1 * Keyless Entry Starter 2 * Remote Controller Handle 1 * Start Button 2 * Antenna Cable 1* Some Other Harnesses