A mention of PIR control of room lights came up in another (unrelated) topic.
Just thought I'd pass on a tip to anybody who is called on to design such an installation.
They are a great idea to stop people leaving lights on in rooms after they've left, but please put a switch in series as well, because there may be times when people want to be in the room with the lights off, for example when using a slide/overhead/PC/cine projector.
Apologies to all those to whom this is insultingly obvious, but I was in a meeting room a couple of weeks ago which showed that this idea had not occurred to at least 1 designer, as we had to climb on a table to stick a piece of paper over the PIR detector in the ceiling, and wait a few minutes for the lights to go out, before we could start out presentation.
Just thought I'd pass on a tip to anybody who is called on to design such an installation.
They are a great idea to stop people leaving lights on in rooms after they've left, but please put a switch in series as well, because there may be times when people want to be in the room with the lights off, for example when using a slide/overhead/PC/cine projector.
Apologies to all those to whom this is insultingly obvious, but I was in a meeting room a couple of weeks ago which showed that this idea had not occurred to at least 1 designer, as we had to climb on a table to stick a piece of paper over the PIR detector in the ceiling, and wait a few minutes for the lights to go out, before we could start out presentation.
