Review on Inkbird Solid Temperature Controller with Thermostat Function by Andrew Kay

I didn't use them on the project I bought them for because the relays were more efficient. I may be using them in a lower circuit soon, but I have to say. The heatsink was designed by someone who either didn't know thermodynamics or just didn't care. For heat to reach the upper fins, it must first pass through a thin cross-section. This throttles the flow of heat, making the heatsink less efficient.