Need better guidance. But my fiddling with the SC controller can add and adjust the calibrated temperature. I will look for the best guide on the web and may have to write it myself. So sad that companies don't include decent manuals. Because the heating works perfectly. You may be setting yourself up for a pace that is too tight. It is not complete as it is a cheap oven. The front is solid on his, but I'll open it up and fix it myself and check the insides for loose wires and grounds. You must do this for all products coming from overseas. Will update if I find additional specs.