Description
The Fenwal 27121-20-190 Over Heat Detector stainless steel is meant to detect excessive heat in the HVAC systems and combustion apparatus. Adjusted to turn on at 190°F, it reacts to an increase in temperature by opening or closing its internal contacts to provide a control system or interrupt power to avoid conditions. It is used to safeguard systems and components against overheating which is used in secure and operational heating applications.
