Visonic alarm has been the most popular and widely accomplished wireless security solution in the UK and remains as a strong choice for commercial and domestic alarm installations. With exceptionally reliable communication between the detector and Visonic PowerMaster alarm panel using PowerG technology, Visonic alarms provides accurate early fire warning, when smoke or high temperature is detected. Visonic alarms allows repeater-free installations, with a large transmission range for large security systems. Comes with reliable smart phone App.