I wouldn't fit a yale system even if it was compliant. I love ripping them down and dropping them off at a tip when we install one of our alarms. With yale equipment you don't get options compared to the panels we use. For instances double knocking a zone or if we get false alarms from a zone (very rare) we can put on a soak test period. Alarm panels compared to yale have a long life battrey span enabling to keep the system going in event of a mains failure. Also with yale system you can only use there Pir equipment with conventional alarm panels you can use most of any alarming equipment where needed. So I'm sorry I don't share your views on this.