Viair 90087 2.0" White Face Illuminated Single Needle Gauge 1/8 inch NPT rear connection requires the use of a 1/8 inch NPT female compression fitting or similar fitting White gauge face Fill an air tank with up to 10 gallons of reserve air for demanding pneumatic use 145 PSI pressure switch and 40-amp relays included for ease of installation Built-in thermal overload protector serves to protect the compressor from overheating the in harshest operating environments