Review on Temperature Controller Thermostat Waterproof Programmable by Tyler Kota

Seems to be doing what it's supposed to do. Instructions and cable markings are in Chinese on the back. Input - Red is + / Black is - . Output - Yellow is + / Black is -. I don't know the exactness. It's easy to use once you translate the instructions. I connected it to a fan and then put a heat gun on the temp sensor. Turns on at the set temperature and turns off at the set temperature. The wires seem to be small, like 22 AWG, so I connected the outputs to a relay to control the fan.