Air Swiches are offered in two types, Normally Open & Normally Closed.
Normally Open Air Switch - Intended for interior or exterior use. Two wire open air switch in a durable metal box. Recommended for use with driveway treadle hose.
Normally Closed Air Switch - Intended for interior or exterior use. Two wire closed air switch in a durable metal box. Recommended for use with driveway treadle hose.
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