Sunny-L4, 95-125 psi, Four Port Pressure Switch w/ On/Off Switch & Unloader, 25 amp Item Number: Sunny-L4 Manufacturer Part No: Sunny-L4 Sunny-L4, 95-125 psi, Four Port Pressure Switch w/ On/Off Switch & Unloader, 25 amp Brand new, SUNNY automatic pressure switch for compressed ...