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Derive low voltages signal/output from PIR floodlight?
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Ben Willcox
Posts: n/a
wrote:
I would like to derive an audio alert from a PIR floodlight. To be more
specific: let's say I have the floodlight above a back window and
driven from a three-pin plug from inside. I would be happy to bring
additional cabling from the PIR.
I will shortly be doing something similar, however I will use standalone
PIRs to trigger a digtal input to a home automation controller. The plan
is to simply use the 240V switched output of the PIR to drive a relay
with a 240V coil. Then I can use the relay contacts to do whatever...
The smallest/cheapest relays I could find with a 240VAC coil are about a
fiver each from Farnell - a shame as the PIRs only cost me £2 each!
Cheers,
Ben.
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