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This automatic reset limit switch is calibrated with a 140°F opening threshold and a 110°F closing threshold
If the system cools down and the switch closes
improper flame impingement (the tip should be immersed 1/2 inch into the flame)
including 9-inch and 12-inch configurations
Honeywell 301572A/0767 Thermostat Key This automatic reset limit switchThe Honeywell 301572A 0767 Thermostat Key is an essential field tool designed for facility managers and HVAC contractors maintaining building security. This replacement thermostat key provides authorized access to locked thermostat covers, preventing unauthorized setpoint adjustments and tampering in commercial environments. Engineered for durability, this key is the direct replacement for standard Honeywell locking covers and is technically identical
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