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Thanks John :)

Hy John Thanks for the info that sounds pretty straight forward. As there are 2 sets of black and orange tabs I'm assuming that I can sets 2 separate sequences of on/off for e.g: 6-8.a.m then 5.00-8.00pm Are the colours significant as in are the orange tabs for the beginning of a...

Hy Folks this is a really easy one for you, I have inherited a switchmaster 300[obviously it’s installed and running my heating system etc] However my mum was the one that always altered it [it was the only technical thing my mum ever mastered bless her] My problem is, and I told you it was...