Review on 🌡️ RioRand 12V DC Digital Cooling/Heating Thermostat Temp Control -50-110 °c Temperature Controller 10A Relay with Waterproof Sensor Probe: Efficient Climate Control Solution by Shane Tomko

I've built a lot, wired a lot, understand how things work, computer scientist by trade. This little device has the WORST instructions I have ever seen on how to set it up. Even YouTube videos and tutorial PDFs are not clear. So here's what I learned so you don't have to make the same mistakes. 12 V is required to power the circuit board - the two right terminals + and - ground. That's easy. Then someone said you can put jumper + on K0, the leftmost terminal, but if you do that the relay switch will short out and the unit will burn. Yes, I had to buy another one. K0 switches on or off. K1 is your pin for your load - can be the positive or negative side, so your pin will come from whatever you turn on or off on pin K0, such as: B. the fan. When you turn the ground side of your device on or off, the ground wire goes into K1 and connects to K0. You can also apply 12V to K1 and when the board turns it on it will provide 12V through K0 and your 12V device. Simple but I fried one by putting 12V plus on K0. Next is a setting that has nothing to do with any of the "P" settings. After switching on the board, the current temperature is displayed in Celsius - no, you cannot switch to Fahrenheit, so buy a converter or download it online. I'm American and we just never learned C. To set the switch temperature, press the SET button once and the "set temperature" will flash - set it to whatever you want your switch to turn on. The other P setting makes sense - I used the 1C setting for the differential - I want my fan to turn on when it gets to temperature and turn off when it falls below - I don't need much differential. The HIGH and LOW settings are the limit the device can perceive - it has nothing to do with the switch temperature setting. So just leave them on unless you want the device to turn off when the temperature gets too high or too low, e.g. B. below zero or above 110 ° C. And there it is. Very easy once you figure it out, but man, it took me a few hours and a burned board to figure it out. Just skip the YouTube videos - they are terrible. LOL And good luck - it's a great piece for what it does and a very good price.