The Defender Magnetic Chime & Alarm is popular and low cost home security device which uses magnetic field technology to identify when a door or window has been opened.
This alarm comes in two parts which are connected via a magnetic field, one part is attached to the frame and the other is attached to the window or door. Once the window or door opens, the magnetic field is broken and the 110dBs alarm or welcome chime will be activated.
Ideal for use on windows, doors, cupboards and sheds to help stop sneak in burglary, or to alert you to visitors.
- Simple and effective magnetic technology
- 110dBs siren or welcome chime
- Suitable for all types of door and window frames
- Self adhesive warning sticker provides maximum visual deterrent
- Quick and easy installation
|Batteries||4 x LR44 (included)|