* Piezo-electric sensor with custom ASIC microchip
* Patented single or double knock option
* LED display
“Viper plus” frame mountable piezoelectric sensor with custom ASIC integrated microchip. The sensor responds to the directly conducted energy released by broken glass. As a result, unit will not false alarm from ambient noise or low frequency vibrations. Works on virtually any size glass. For unit with built in contact order 834LCW. Specify white or brown.
* Unique patented end user test feature can prove its working anytime, even when armed
* Hears through drapes, blinds, curtains
* Hears all glassbreak frequencies
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