The covert accelerometer detects if an object is moved. It is designed to protect your most valuable possessions. It is discreet enough to be concealed in or on almost any item and signals an alarm when the object is moved. It is designed to be used on items such as valuable paintings, jewellery boxes, fine art, museum exhibits, drawers, gun cabinets, safes and similar applications. The external version is waterproof to IP65 and is ideal for garden gates, statues and garden ornaments and garden furniture. Both versions are always awake so provide 24-hour cover even when your burglar alarm or intruder alarm is switched off. Both units are Grade 2 class 2 detectors so are suitable for all security installations.