Reznor 205442 SPST Pressure Switch 0.20" WC

The Reznor 205442 SPST Pressure Switch is a Single Pole Single Throw switch and it switches on or off a circuit depending on pressure with a pressure range of 0.20" of water column. This switch is applied in most gas fired heating appliances like furnaces to check the proper flow of air. It is used in maintaining system safety because it can identify abnormal pressure conditions that may lead to system damage or failure. It is an effective means of enhancing the efficiency of the system and, subsequently, energy saving and the durability of equipment.