ESP Caretaker (Barometric) Concealed Security System.

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The ESP Caretaker, is an advanced key operated barometric pressure sensing alarm system, capable of detecting small changes in air pressure within it's designated protected perimeter. The Caretaker can sense when a door or window has been opened (NO wiring required) just plug in and activate. Once a change is detected, the unit delivers an ear splitting 120db internal siren and provides output for an external sounder. A built-in 9v PP3 battery backup and very easy to conceal. Manufactured entirely from steel, makes the Caretaker a great deterrent in homes, offices, building sites and stock rooms. COLLECTION ONLY - NO POSTAL SERVICE OFFERED Cash, card and PayPal accepted upon collection. Don't miss out on this bargain!