Hi - I wanted to rig up a PIR type sensor for the landing to switch
the light on - in my kitchen I used the sensor from a halogen
floodlight which works pretty well.

Can anyone recommend a sensor - I guess it would be useful if it could
fit in the normal single switch space since it will look across the
landing rather than down on it and maybe the cat wont set it off!

And ideas on prices or other useful comments?