Lennox 12L46 0.40" WC SPST Pressure Switch

The Lennox 12L46 0.40” WC SPST Pressure Switch is anessential part of Lennox heating, ventilation, and air conditioning systems. It is used as a safety and control element that measures the pressure of air inside the system. When air pressure drops to 0.40” of WC, the switch operates to perform actions in the furnace or the air conditioner. It drops when the pressure reaches 0.55” WC and then resets to enable the system to work under normal conditions. It comes with SPST control has a resistive switching current of 5 amps at 24V AC and has an electrical connection of 1/4 inch NPT . Additionally, the switch is within a wide temperature range of -40°F to 150°F, ensuring functionality in various climates.