"Timothy Murphy" wrote in message
...
I'm looking for a gizmo to make a light go on when it is dark.
More specifically, it should go into a bayonet light socket,
and allow a bulb to plug in on the other side.

I've seen such devices (and in fact have one, by TimeGuard)
but they all seem to be far too clever,
and have various modes switching on and off at random,
but amazingly do not have a mode which simply switches on
when it is dark, and off when it is light.


I've got one of these things (lower half of page) which replaces the
normal light switch.

http://www.tlc-direct.co.uk/Main_Ind...Menu_Index/Lig
hting_Controls/index.html

http://tinyurl.com/5g89u

You can get a device to put in your circuit to get it to work with a
fluorescent - presumably it leaks a small amount of current allowing the
sensor to work.

HTH

Neil