Don't know exactly why these are not supposed to be suitable, think it's
something about the switches/sensors needing a small amount of permanent
current to operate...

Anyway I use the Ikea low energy bulbs in an outside light that is on a dusk
to dawn sensor with no problems

HTH

Jim

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"Martin" wrote in message
...
Hi All,
Just bought a GE Energy saving light bulb intended for an outside light
(bottom of the garden).
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.

Martin.