My overheat safety system was almost perfect. The only problem was that the power relay was only rated up to 120v. That's no good for those of us in countries with higher mains voltages so I designed and built a power relay capable of switching up to 250v at 10A.

YouTube video guide here:
https://youtu.be/Ukt1zOgVv_Q

Part list in YouTube description

Creality

CR10S PRO

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No

200

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