This pressure activated door mat burglar alarm is a simple but effective and discrete method of adding security to your shed, outbuilding or home. It can be used anywhere, simply place under a doormat or carpet and when trodden on will activate either an alarm or chime sound. If the alarm mode is selected the siren will sound for approximately 30 seconds and then re-set itself. If the chime mode is selected it will sound twice. The pressure mat and alarm is connected with a 10m thin cable which can be extended if required.