NICREW Digital LED Heating and Cooling Temperature Controller, Reptile Thermostat for Snake, Lizard, Tortoise, Vivarium and Other Reptiles, 1100W 220V

I have been using this paired with a cheap reptile terrarium heat pad inside a cool box to grow Koji for Miso and Sake and other fermentation projects. It can easily maintain 32c. It is designed such that you simply plug a heatpad into the open plug socket and plug the device into the wall. My only small critique is that when setting it up the temperature it doesn't ask you to set a range to maintain but rather asks you to put in a maximal value at which it will turn off and a difference value beneath which it will turn on. This amounts to the same thing but I did have to re read the instructions a few times. In all fairness this is primarily aimed at he as ting terrariums where I am sure desirable parameters are different. Previously I have (poorly) wired my own temperature and humidity controller as Humidity/Temperature controllers like InkBird with two plugs are quite expensive. However I have been having great success with my Koji simply covering my grains with a plastic bag or cling film to keep humidity in. In my experience it is poor temperature control not poor humidity control that kills Koji most often. This device maintain temperature excellently and if you do wish to grow Koji specifically I don't feel humidity control is a must, just steam the grains so they are not at all mushy or stick together (undercooked if anything) and then cover to keep the bulk of the temp in with just enough space to let air flow (another factor majorly over emphasized online in my opinion). This device maintains temperature at 30-32c in an insulated container and does not exit these parameters, it's quite cheap and so I would highly recommend it ( for fermentation).

Easy to set up, does what it's supposed to do.

After reading the instructions though, this was pretty simple to set up! I think a lot of the other reviews over-complicated it but you just need to adjust the temperature to the max one you'd like and click "set". That's all there is to it. I have it at around 32c for my corn snake and it turns off the connected heat lamp if it gets too close to the temperature. I'm not sure about the accuracy to be fair, it has a habit of flicking up and down between each tenth of a degree every few seconds which is a little irritating at night when either warming up or cooling down. I've attached it to an extension lead to plug into my wall and so far so good though! Haven't had any issues with it thus far other than the flicking between degrees constantly.

Must have for your habitat/ vivarium had it for years now and had no problem

works well

This is much better than expected for the price

Very good

Rubbish. Worked for two weeks now won't work at all. Unit has no damage but won't shut up alarming and displaying error codes LLL or EEE. Nicrew and Amazon of no use