DEWENWILS Digital Temperature Controller, Heavy Duty 15A/1800W Thermostat Outlet Plug, VA Display Heating Cooling Control Timer, -40℉~210℉, Cyclic Timing/Countdown, for Greenhouse Incubator Homebrew

This digital temperature controller is extremely easy to program and provides precise temperature control within 1/10 of a degree, just as advertised. I use it to regulate the temperature in an elevator room, keeping the hydraulic fluid within a stable 75-85°F range. Setting it up is straightforward—I simply set the low limit to 75°F and the high limit to 85°F. When the temperature falls below 75°F, the heater automatically turns on, and when it exceeds 85°F, the heater shuts off. It has functioned flawlessly every time.The LED display is bright white against a black background, making it easy to read. One amusing detail is that one of the buttons is labeled "Fun" instead of "Run" due to what seems like a misprint. The manual even instructs users to press the "Fun" button to start the program, which gave me a chuckle. However, this minor labeling error doesn’t affect the functionality of the controller at all.While I can’t yet speak to its long-term durability, I’m very satisfied with this purchase so far.

Use in our greenhouse to control the fans. Temp is set to turn on at 75F and off at 70F. Works great. Saves a lot of time checking temp in the greenhouse. Fairly accurate temp. Easy to program. Only wish for improvement is a brighter display that could be seen in bright sun. I have to shade it before I can see it. Not a big deal.

My analog BUNN VP17-1 thermostat has a wide hysteresis and was overshooting and boiling water creating a mess between batches of coffee. @ $50+ dollars I decided to rewire and use an external thermostat. I fit the provide probe with a food grade silicone hose and submerged 255mm into the thermal tank reservoir. Works great and let's me know what is happening inside. Currently overshooting target by 1 degree but cools onto target before next pot is brewed, I suspect the old analog thermostat did worse. Quite happy with a solution 1/3rd of OEM digital feedback allows me to set different Temps based of what style of coffee I am roasting. Of note I could still plug in another appliance below without compromise. Very nice clean installation. Very nice to have a visual indication the temp is the perfect brew temp!

This worked great for the chicken coop light during the winter and for the fan in the chicken coop during the summer. Easy to use and program.

It seems to be very sensitive and turns on and off at the indicated temp. I didn't check to see how accurate it is.

I wanted a thermal switch to run a 1500 watt oil filled radiator in my unheated cellar to keep pipes from freezing. I tried the little yellow cube units with a built in thermal switch and outlet, but I learned that they do no work consistently with high current devices - the current warms them up so they turn off even though the ambient temperature is still low. This unit didn’t cost that much more, has a nice digital readout, and lets you set both the on and off temperatures. I have been using it for about a month to control the 1500 watt heater, and have not had any problems yet -it works fine, and there is no sign of overheating or scorching that other buyers have complained of. I have verified the on and off temperatures with a separate temperature senor.

Worked great for 2 months - then came in to an office at 102 degrees inside due to not shutting off the power. Do not rely on this - dangerous.

I’ve only had it 12 hours today to control the temperature in the house running a swamp cooler. We usually have to get up and turn the cooler on and off because it is too cold! I’m learning the temperature differential to keep the entire house cold! But it’s working great so far! Now if it only knew the weather!