Compatible with general automotive anti-theft alarm systems, with remote control and Sire functionality.

1. Press the "Lock" button. The alarm will sound once and enter anti-theft mode after 5 seconds. If triggered by vibration, the alarm will sound for 5 seconds. If triggered again by vibration after 3 seconds, it will sound 6 times in a loop. 2. Press the "Unlock" button. The alarm will sound twice, and the device will deactivate the anti-theft system. 3. Vehicle search function: Press the "Mute" or "Ring" button to sound the alarm. Press either button to stop it. This function is not available if there is no "Mute" or "Ring" button. 4. Sensitivity adjustment: There are 7 levels, with level 7 being the highest and level 1 the lowest. The default setting is level 4. a. Increase sensitivity: Press and hold the "Lock" and "Unlock" buttons simultaneously for 3 seconds. If the alarm sounds 4 times, the sensitivity is set to level 4. Pressing the "Lock" button once increases the sensitivity by one level, to level 5, where the alarm sounds 5 times. This continues until the alarm sounds 7 times, indicating level 7 sensitivity. After confirming the desired sensitivity level, do not operate the button for 5 seconds, or press and hold the "Lock" and "Unlock" buttons simultaneously for 3 seconds. The alarm will sound 3 times to exit the sensitivity adjustment mode. b. Reduce sensitivity: Press and hold the "Lock" and "Unlock" buttons simultaneously for 3 seconds. If the alarm sounds 4 times, the current sensitivity level is 4. Press the "Unlock" button once to reduce the sensitivity by one level, and the alarm will sound 3 times. Press the "Unlock" button again to reduce the sensitivity to level 2. Level 1 is the lowest level. After confirming the desired sensitivity level, do not operate the button for 5 seconds, or press and hold the "Lock" and "Unlock" buttons simultaneously for 3 seconds. The alarm will sound 3 times to exit the sensitivity adjustment mode. Color: As shown in the picture. Material: Plastic. Package contents: 1 * Main unit 2 * Remote control. Only the above package contents are included; other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual item. Measurement errors are allowed.