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Viair Air Electrical Accessories Pressure Switch with Relay is used for 12 volt systems only up to 40 amps. It regulates air compressors and features a built-in relay to carry longer loads and prolong its life. It has a weatherproof casing and insulation. It is also pre-wired and conveniently labeled. This pressure switch is moisture resistant and well tested to last over 10,000 cycles.
Note: To be always mounted right side up and never upside down.