Over 90% of all burglaries begin with broken glass/window, as it is the easiest entry point for intruders. Protect with Glass/Window Break Detector, the most cost effective choice for glass/window security. It uses piezoelectric ceramic sensor to detect glass breakage. Glass/Window Break Detector is so effective, yet, it will not be affected by normal shock or vibration, so you won't have to worry about false alarms and costly service calls, unlike the complicated design of acoustic glass break detector. And it can be connected to control pannel without any additional power. Features 1. Utilise piezoelectric ceramic sensor to dtect glass break 2. Hermitically sealed 3. No additional power is needed 4. Easy and quick mounting via 3M adhesive tape 5. Certified by ETC, and passed electrostatic discharge/RF/EFT/Burst/Surge tests. 6. Glass thinkness range from 3~8mm 7. OEM welcome Specification Contact Output: N.C. Conductive Resistance: 6~8Ω Testing Resistance:1.02 ± 5% MΩ Trigger Resistance: ∞Ω Current Consumption:40mA (max) Surge Proof Voltage:2000V (max) Supply Voltage: 25V DC (max) Conduction Time: 3~10 sec Ambient Temperature: -10oC ~ 60oC Installation: industry adhensive (silicon recommanded) Dimension: Φ3.4cm x 1.15cm