The Wolo PS-2 pressure switch is specifically designed for Wolo's high-pressure on-board air systems, Models 858 and 860 and is compatible for a wide variety of other manufactures on-board air systems. The PS-2 switch is factory preset to turn on the compressor when tank pressure is below 100 PSI and turn off the compressor when the tank pressure reaches 130 PSI, with a tolerance of 10 percent (pressure turn on/off pressure range is not adjustable). Rated to operate reliably up to 25 amps and is built to be compact in size, connects with standard 1/4" push-on terminals.