DuroStat NEMA 4 Waterproof Mechanical Thermostat – 30°F to 110°F

Works perfect

The calibration is off by 10 degrees to the minus for cooling (70 on stat is 80 in greenhouse). Wiring diagram could be better

This was exactly what I was looking for and spent a lot of time trying to find. The space inside is a little cramped for completing the wiring, but otherwise I was very pleased with this thermostat. I placed it in-line with a heavy-gauge extension cord which then connected to a series of outlets to automatically turn on heat lamps for a small greenhouse. It worked well and was certainly accurate enough for my application. Be careful not to overtorque the screws.

When my greenhouse thermostat stopped working, I needed a better thermostat quickly. The new thermostat works well and the prompt delivery was great.

Thermostat works ok but the cover is fragile. Be sure to locate it in a place where nothing will bump it. The cover comes off often. Otherwise it's a good product.

Great stat. Use these for small heat trace runs and exhaust fans. Super simple.

Still Working good

Nice thermostat for wet environment but comes with 1/2" hole already drilled in the top and doesn't include a grommet or plug for that. Would be ok if thermostat wire was in conduit but most greenhouses I work in have thermostat wire just stapled or tied to building or frame. I would prefer the hole at the bottom or none at all. I can drill my own hole. End result, you have to supply your own water proof grommet or plug.