Feature:1. Designed with alarm indication of ultra-high sensitivity and ultra-low sensitivity.2. Ceiling and wall-mounted installation, supports vertical or horizontal installation on or glass.3. Two-stage potentiometer adjustment, compression piezoelectric sensor.4. The shell tamper‑proof protection alarm and alarm output improves family safety.5. Omni-directional microphone design, strong detection and high sensitivity.How to Use:1. After the device is connected to the power supply, you can do a test first. The magnet‑operated test mode can be used for positioning confirmation and test operation. This test mode also includes a test of the surrounding environment, which allows the installer to distinguish the noise caused by the surroundings. False positives.2. Using the automatic sound detection capability, the end user can confirm whether the detector is powered on, and can detect the functioning of its function by clapping.3.The external visible LED indicator is used to display alarm or test status.Specification:Item Type: Glass Break DetectorMaterial: ABSSensor: Compressed piezoelectric sensorWorking Current: 12.5mAWorking Voltage: 9-16V DCWorking Temperature: -10 degrees Celsius to 50 degrees CelsiusResponse Time: 20 secondsCommunication Method: Wired Package List:1 x Glass Break Detector1 x Manual