Visonic is a global leader in home security. Visonic burglar alarms are sold in over 100 countries. Powermax and Powermaster are the msot popular range of Visonic alarms using high-end alarm technology. PowerG is their latest and most advanced technology used in the wireless alarm systems which make the Visonic alarm system more reliable and robust. The following are the most popular Visonic alarms systems in UK, ready for installation. FHA is a Visonic Platinum Installer in UK and the prices are inclusive of supply, fitting and VAT.