Used two of them in greenhouse for two winters and one summer. One got broken. Bought a new one because got used to model. The switch on works always on both heaters and fans. But it does not always turn heaters and fans off when the limit temperature is reached and I have to do it manually to prevent overheating. For example, I set low at 67 and high at 82 thinking the heater will turns of after 67 and fan will be of at 82. But the heater may go up to 82 until fan is on and vice versa.

Very good for the price.

I use this for a boiler so my temps are between 175 and 185F. When I at ambient temps it seems to be a few degrees off but on the high temps I am 25-30 degrees off. Maybe I have a bad probe? or not accurate at high end of the spec.

It works pretty easy setup was easy no need for instructions, connection to the app easy. I dont have any lab grade gear to attest to the accuracy so they get a pass on that. I take down 1 star for Temp control and ease of use because of the fact it beeps at you non stop until you press a button any time you remove power. For my personal use case this is fairly often and so thats annoying. Also I bought this one because it works with the smartlife app which works with Alexa, however be aware you cant set or retrieve temp via Alexa. I use this as a secondary temp controller to act like a watch dog for my primary temp controller. I use it to control a heater inside a 3d printer enclosure, I had my primary controller freeze in the on state which had my every metal surface in my enclosure around 90 Celsius; so I now run two so the power gets cut in an over temp situation.

We used this thermostat to control an oil-filled radiator and fan to keep our insulated cattery at a comfortable temperature all year long. The thermostat has done an admirable job keeping temps in the desired range and alerting us when they fall to low (on the coldest days last winter, time to turn the radiator up to high!) or too high (before we got the AC setup). It has been great to be able to remotely check the temperature and tweak it from off-site.

This temperature unit is so well made the plug ins are solid the cables are thick and the overall unit is very durable. It is awesome that you can connect to Alexa and control an additional heating or cooling device with your voice or when temperatures get to certain levels this is great for terrariums or growing plants. I would highly recommend this setup

App is questionably a bit too foreign, but it works. I’ve used one to control my ac for a couple of years now still going strong.

Keeps disconnecting from my WiFi

I use this together with a chest freezer for home brewing purposes, both lager fermentation (48°F - 53°F) and lagering (32°F - 35°F) The controller works well in this scenario and the fact that Im able to connect it to my WiFi network and both monitor and control it from anywhere in the world is a real bonus.

This was a giant disappointment. At first it looks like it will work great. The problem with mine is once it kicks heat or cool on, it doesnt shut off. So what I got was a greenhouse that was 100 degrees (or freezing after cool turns on). The worst part is support, I tried and there doesnt appear to be any. On their web site, no contact.