It features two setpoint windows

this reversible actuator clamp is compatible with Belimo SM

featuring a strictly calibrated

This ensures your heating system only fires when the exhaust path is clear and stable

Using a 120V coil with low voltage can cause "chattering

Williams P500406 Limit Switch It features two setpoint windowsThe Williams P500406 Limit Switch is a critical safety component designed for precise thermal regulation in Williams Monterey top vent heaters and furnace gas valves. Engineered with a 270 degree Fahrenheit Cut Out, this Manual Reset (M R) limit switch serves as a reliable failsafe, interrupting the electrical circuit to the gas valve if internal temperatures exceed safe operating parameters. This specific HVAC high limit control is essential for