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 Mark Clark

Works well for a compact and inexpensive device. I use it to keep my 3D printer hot bed warm. I bought a 12v power supply to power it and placed the temperature sensor in the base of the hot aluminum bed. I had to adjust the delta and settings to make it support the ABS printing temperature range, but other than that it just worked right out of the box. I've been using it for a little over a month, no problems at all.