This Intermatic EI220 timer has replaced a failing rotary mechanical timer for a whole house fan. It works well. Running times have accurately matched the chosen settings, usually one or two hours.The timer requires a neutral (white) wire in the electrical box as well as the power that's being switched (black). The mechanical timer does not require the neutral, so I should have looked for that wire before ordering, Fortunately the white wire was there.Times of 1..
This unit is the exact same unit that Quiet Cool sells on their website, but for half the price. It's a timer, it works. Not much to say about it except that it does exactly what I expected it to do, and I have had no issues with it since I installed it (about 2 months ago).
