In uk.d-i-y, Clive Mitchell wrote:
In message , Mike Barnes
writes
AAMOI, how do you know they couldn't take a CFL? Is it an electrical
or a mechanical problem? We have two such lights (PIR-operated
bulkhead lights), different designs, and I fitted them both with CFLs
a couple of years ago, no problem.

Might have been triac operated. The CFL load would cause latching and
triggering problems.

OK, but can you tell that by looking at them while walking past on the
street?

--
Mike Barnes