Reach the Valhalla with this pressure switch, designed for high-pressure onboard air systems. Ideal for air horns that require high air pressure. Preset to turn on the compressor when tank pressure is below 90 psi, and turn off the compressor when the air tank pressure reached 110 psi, with a tolerance of ± 10%. For 12-volt power source. With "male pipe thread, and 1/4" electric male spade terminals.