Review on 🌡️ Inkbird ITC1000 Dual Stage Digital Temperature Control Thermostat- Heating Cooling Relay with ℃ ℉ Display for 3D Printer, Freezer, Fridge, Hatching and More (110V) by Brandon Barrett

I just installed this device and I'm having a problem with it. Switching from C to F went smoothly. BUT when I set it to temperature to turn on my 120 volt main fan, the relay in the unit just clicks, clicks, clicks. Quite a quick click, it seems the fan is working. I don't know if it's full throttle or not. When I raise the temperature again it stops, but so does this fan. It should click ON only when it reaches the set value. What's going on here? It's not that hard to connect. I am attaching a video of what is going on. Because of the way the video is recorded, you won't see the display flicker, but you can clearly hear it clicking on the relay. I have a set point of 50 degrees, which is lower than the outside temperature. That should turn on the relay and let the fan run to cool the device down to 50 degrees, or run forever if it can't. But you can see the repetition going haywire. I increase the setting via the outside temp gauge which turns it off, the fan turns off and indeed the relay stops making noise and flashing rapidly. 1-2-2019 I sent an email a few weeks ago. No Answer. Customer service seems to stink! You do not endorse this product. I would avoid at all costs.