In article ,
Martin wrote:
On the box it states not suitable for use with timers or photo-cell
circuits. Anyone know why? I'd like to run it from a timer or light
detector thingy and leave it on all night.

It would depend on the design of the timer or sensor. The way round using
any sensor with one of these is to add a relay.

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*Work is for people who don't know how to fish.

Dave Plowman London SW 12
RIP Acorn