Simple Emergency Override

I find the Sonoff TH16, with a sensor, the perfect energy saving device for my water pipe supply heat tape system. My problem is the reliability of any device, including Sonoff. If it fails, my pipes freeze and burst.

I am looking for a simple emergency ovverride circuit. Will either of these work or will I need to install this work or do I need to install a diode on the load side of each wifi switch?

Both circuits can be used as override, don’t use diodes in a.c. circuits.

Thanks! I will let you know if I burn my cabin down. :slight_smile: