Magnetic Door & Window Open Alarm £5.99

A simple door and window open alert system. This can be installed directly on any door or window without additional wires. Fix the alarm unit to the edge of a door or window and the magnetic bar to the door or window frame. A loud 85dB alarm sounds from the alarm unit, alerting a carer in the vicinity when a door or window is opened. Self adhesive pad included. Requires 3 x LR44 watch batteries (included and fitted). Supplied in a pack of three.