On 13/01/2018 08:36, harry wrote:
On Friday, 12 January 2018 13:37:00 UTC, Dave Plowman (News) wrote:
In article ,
wrote:
If you read the post, he says 'Auto day light switching and solar
powered ideally'

PIRs usually have that

The PIR isn't the problem. It's powering the lights themselves.

The PIR itself uses power.

Not enough to matter. I have a battery powered PIR triggered 3W LED lamp
over my front door and it lasts around 2 years on 3x C cells with
regular use. It was a lot more frugal on batteries than I expected.

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Regards,
Martin Brown