You can install by h&, in a few moments, either an effective deterrent or a reliable entry detector. This alarm system lets you switch between two modes: window alarm with a loud alarm signal, or entry detector with door gong. Whether fitted to a door or window frame, installation is fast & simple. Attach it simply with double-sided adhesive tape, switch on &8211; then it&8217;s ready. Also ideal for mobile homes, caravans or summerhouses.