Ajax DoorProtect Plus Black

Combined door contact and vibration dectector Installation: Indoors Activation threshold: Small Magnet - 1cm Up to 1200m in an open space (in a perfect environment) Operating frequencies - 868.0 - 868.6 MHz Power supply: CR123A battery (pre-installed) Battery life: up to 5 years Dimensions: Diameter - 200mm, Height - 90mm