Item Name: Relief Pressure Valve Air Compressor Valve Control Switch Pressure Switch. Red ON/OFF switch knobAuto control. Auto load/unloadMax AMP Rating: 20A (Pressure lower than 90PSI, turn on the compressor. Pressure over 120PSI, turn off the compressor.)Maximum Voltage: 240VPressure range: 90-120 PSIPackage Included:1 x 90-120PSI Air Compressor Pressure Switch ControlNotice:Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering.Please understand that colors may exist chromatic aberration as the different placement of pictures. *Please make