this mechanical thermostat features a liquid-filled sensing element that ensures precision repeat accuracy regardless of barometric pressure or cross-ambient conditions

Can this switch be used in horizontal or upflow configurations

Inspect the O-ring whenever the vent motor is removed

and fan wheel must be purchased separately or transferred from the existing assembly if they are in serviceable condition

making it highly efficient for multi-device loops on restricted power supplies

Johnson Controls A421AEC-01 Temperature Control Els PW 17895 this mechanical thermostat features aThe Johnson Controls A421AEC 01 is a high performance single stage electronic temperature control designed for heavy duty HVACR applications requiring precision and environmental protection. This unit features a versatile 120 240 VAC power supply and a wide temperature control range of 40? F to 212? F ( 40? C to 100? C), making it ideal for everything from walk in freezers to boiler systems. Built with a NEMA 4X watertight enclosure, the A421AEC 01 is