The EVD-1, Electronic Vibration Detector, is listed by Underwriters Laboratories, Inc. for primary protection of Mercantile or Bank, safe or vault, ATM machines and supplementary protection of interior units such as file cabinets, display cases, walls and ceilings. The detector must be used with an appropriate UL listed control unit.Main FeaturesBuilt in test circuitRemote test and annunciator capabilitiesSupervised microprocessorIndependent tamper outputOn board test point facilitates installation and service