A potential customer has an external light control system originally manufactured by Timeguard. There's a controller in the loft space which has a 2 core cable to each PIR which seems to be a bus wire. The PIR's are now failing, part number: SL099. I've found them on Google but they are discontinued and nobody seems to have any available.
http://www.timeguard.com/media/266/SL099_Instr.pdf
Does anyone know anywhere that may stock them? I know it's more likely that the system will have to be replaced. Is there a similar system that uses a two core cable to link the PIR's to a central controller?
There was a similar post on here in 2015 which got not replies, but I thought that it was worth a try
http://www.timeguard.com/media/266/SL099_Instr.pdf
Does anyone know anywhere that may stock them? I know it's more likely that the system will have to be replaced. Is there a similar system that uses a two core cable to link the PIR's to a central controller?
There was a similar post on here in 2015 which got not replies, but I thought that it was worth a try