Pressure transimitter inside, stable and accuracy.Switch of the pump during water shortage and on with water.Micro-computer process chip, safe and intelligent control.One-click set up on/off limit.Waterproof: IP65Relay Capacity: 220V AC 10AWorking Pressure Range: 0-10 Bar, matching with all pumpsOutput signal: active output, to provide pump 220V, start the pump below 1.5KW directlyType:Digital Pump SwitchCondition: 100% Brand NewInstallation Remarks:If the pump doesn't have a check valve, then a check valve must be installed in front of the pressure, in this case the pump may on/off ,ore frequently.When you turn on the tap water, if the pump is on/off time to time, please adjust the H valve to a larger valve.If the pump keep runs with stopping, please lower the H valve, on the other hand, if th epump doesn't work, please set the L valve higher. Voltage: AC220VPlug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so onColour:As ShownMaterial:Metal + PlasticPackage Contents:1 x Digital Pump SwitchOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.