"Dave Cornwell" wrote in message
...
snip I've found most of the radio sensor ones to be pretty good and very
cheap
now. If you only want temp and humidity Maplin's usually have one and the
Lidl's (Silvercrest) one is top notch when it's in.
Dave

Just as a matter of interest, can someone explain to me how these humidity
sensors work? My LaCrosse one packed up some time ago, and I took it to
bits, but apart from the wireless gubbins there didn't seem to be much going
on inside.

Steve P