Compressor Source Automatic Timer Drain This is a 115 volt electronic, automatic timed, moisture drain with strainer for air compressors, and air tanks. This drain can be set to drain every minute or up to every 45 minutes. The valve can be set to stay open between .5 and 10 seconds. Most commonly, these drains are set to drain for 3 seconds every 30-45 minutes. This valve also has a "Test" button that you can use to manually drain it at any time. This electric drain plugs into a standard 110-120 Volt outlet and has a 5.5 ft long cord. This valve features a 1/2" MNPT air inlet which measures about 3/4" in diameter, and 1/2" female air outlet. Specifications: Interval Time: 0.5 - 45 Minutes Discharge Time: .05 - 10 Seconds Manual Test Switch: Yes Current Consumption: Max 4mA Operating Temp: -40°F to 122°F Environmental Protection: IP65 (NEMA4) Case Material: ABS Plastic FR Grade Connection: DIN 43650A Indicators: Yellow - Open/Closed Valve Type: 2/2-Way Direct Acting Valve In/Out Ports: 1/2" Male/Female NPT Max Working Pressure: 16 Bar Media Temp: Max 194°F Valve Body: forged Brass Insulation: Thermal Group H 180°C Supply voltage: 115 Volts