Visonic complete wireless burglar alarm security system kits. PowerG is Visonic’s patent-pending, revolutionary wireless technology for burglar alarm systems. It literally redefines the reliability of wireless intrusion alarms. And, it fully answers the most demanding needs and requirements facing the security industry today, as well as the challenges of tomorrow. All our intruder alarm systems are designed for small to large properties. We provide a fitting service in Sheffield on all our Security Systems. Please contact us for further details.