OldNslow those timers you pictured caused me nothing but problems with my 250W setup, probly because I was using them for balast/air movement/nutrient reservoir pump. Sometimes they reset, sometimes didn't switch. The great advantage with digital is the Multiple Event Timer Functions that enable you to switch on and off many times per day, or miss days out if you wanted. that is a bonus IMO. I think the mechanical 6 way Gemini contactors like the one pictured below are better than the low powered household equipment available. But I suppose its down to application in most sence. £115 is expensive but I know where i can get 2nd hand ones for less than 1/5th of the retail price.