The Saunacore Part #HTR012 Manual Reset High-Limit Switch with pig-tail is a crucial safety component for your sauna heater. This switch is designed to prevent overheating by automatically shutting off the heater if temperatures exceed safe levels. The manual reset feature ensures that the heater remains off until it is manually reset, adding an extra layer of safety. The included pig-tail simplifies installation, making this switch an essential replacement part for maintaining the safe operation of your sauna.