i bought about 3 weeks ago after heater failed but what i did is leave it as a second control if the temp goes up its shut down heater,lights,and turns on fans this way fans will come without the lights, i paid $58.. for the ETC-111000-000plus tax, from HVAC/R wholesale dist. the price that your getting it from diyreef is great,allso this is one of the best controller on the market,