Internet controllable hot water / central heating module

[Kananga]

Muncher said:

I can't say for sure but when wiring up mine the instructions did say to use shielded cable. I suppose it depends on what kind of interference the cables are exposed to?

Thanks. I've just realised they've used unshielded cable for all of the room stats too!

Is there any way to test the interference levels ?

[Muncher]

Probably not until you can get all the usual electrical kit in there...

[Kananga]

Muncher said:

Probably not until you can get all the usual electrical kit in there...

I have full access, is there some sort if testing gear I need to check for interference ? I have a multimeter, but assume I need something else ?