Item Name: Single-phase Pressure Gauge Safety Valve Switch Control Valve Air Compressor. Material: Metal and PlasticBSP Thread: 4 port 1/4" BSPMax.Volt 240-Amp.20Max pressure: 12 bar ( 175psi)Voltage (V): 220-240VPackaged included:1x air compressor switch1x air pressure gauge1 x Safety Value2x blanking plugs Features:Strong plastic shell and great performance.Four port manifold configuration allows for easy installation.Used to regulate tank pressure between two pre-set values on Standard electric air compressors.Fitted with an auto On/Off button for manual compressor shut off.Widely used in personal workshops and factories. Notice: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