Ok, maybe not the best place to post this, but I can't find anywhere better and I know someone here will have an answer to this query : Am I correct in thinking that a dual channel central heating programmer (HW and CH on seperate channels) is basically an electronic, relay operating timeswitch ? I am building a bespoke vivarium (reptile accomodation) and need to be able to accurately set timings for two devices. One feed is to the thermostat and is very low current draw as it simply signals day and night to the stat - I'm reasonably comfortable this one will be ok. The second feed is the power for the fluorescent UV tube controller, which appears to be a transformer/ballast unit. It is this feed I am not so sure whether I can switch via the proposed central heating programmer. Anyone out there know the answer to this ? The plan was to build the programmer into the unit to give a nice control panel rather than using bog-standard mains time clocks which are currently used now and look unsightly. P.S Mods please feel free to move this if you feel in the wrong area.