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A block of flats has a set of outdoor security lights each switched on by a separate PIR sensor switch.
The lights are 500w incandescent and the PIRs rated at 1000w or more. Different makes of PIR have been tried but after a few months they mostly fail by remaining turned on. Any thoughts on why this happens?[MENTION][/MENTION]
The lights are 500w incandescent and the PIRs rated at 1000w or more. Different makes of PIR have been tried but after a few months they mostly fail by remaining turned on. Any thoughts on why this happens?[MENTION][/MENTION]