Description

Dwyer Instruments M-51R-74 Double Adjustable, Heavy Duty, Automatic Reset Bi-Metal Air Temperature Switch Simple Type: Temperature Switch Designed for use as a limit switch, fan control, or alarm switch, Model M-51 is used on all types of air conditioning ducts, furnaces, ovens, dryers, etc. Unit may also be used with damper control system to prevent spread of fire through ducts. Adjustments for both set and reset points. Visible dial shows duct temperature and switch set points. Download the datasheet (PDF)