DuroStat NEMA 4 Waterproof Mechanical Thermostat - 30°F to 110°F - Range Heavy Duty Heating & Cooling Controller for Greenhouses, Barns and Garages

Works perfect

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.

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.

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

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

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.

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

Still Working good