I bought an ITC-106VH ink for a pottery kiln I built for my wife. The wiring was very easy, although the correct connection of the solid state relay was not described in the instructions and was confusing for a beginner. Operation is very simple, although the meaning of many settings is not entirely clear even in the supplied operating instructions. If you want to understand why the presets are the way they are, be prepared to do some research outside of the Inkbird website. If you only want to control the heating element, this device is easy to connect. The only downside I have is that it takes a while to change the temperature as it's a simple up and down arrow adjusting a tenth of a degree at a time. It would be nice to be able to print to some degree, but I don't think the functionality could reasonably be built into such a compact product. The wiring for 220V was a bit difficult due to the larger cable cross section. All in all a very good and simple product.