24 x Homewise Window Alarms And Extension Siren

• They activate instantly and are easy to attach to any surface. • Absolutely tremendous value set of FOUR loud door and window alarms. • Easy to switch both on and off by the use of the key. • Simple to install, simple to operate and assured peace of mind. Comes with European CE mark of approval and RoHS compliant. • Simply peel off the backing strip on the mounting pad and apply where desired on both doors and windows. Once the contact between the two units is broken, the alarm will sound. • Batteries included