If its wireless then one supposes it needs to power a transmitter every time
it operates?
Brian

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The Sofa of Brian Gaff...

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"Dave W" wrote in message
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"ss" wrote in message
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I have a wireless Yale alarm, battery operated.
I dont have a need to use it often but find the batteries in one
particular PIR only lasts approx 6 months, the others maybe 18 months.
This PIR is passed multiple times a day, so my question is, even though
the alarm is not turned on does the PIR use battery power everytime
someone passes it.

Of course - battery power is required to run the PIR sensor, whether or
not it senses anything. Perhaps that particular one has been set for
higher sensitivity, requiring more power.
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Dave W