Specification Brand : Red Lion BulletPoint1 : PROTECTS YOUR PUMP: running a pump without water can severely damage a pump; this switch automatically shuts pump off when pressure decreases 10 PSI which prevents the pump from running dry BulletPoint2 : M4 TYPE: has manual reset lever and 1/4-inch Female NPT threading at the bottom of the unit; once well has recovered, hold down lever to manually re-start pump BulletPoint3 : PRESET FOR 30-50 PSI OPERATION: cut in pressure = 30 PSI; cut-off pressure = 50 PSI, adjustable BulletPoint4 : LIMITATIONS: designed for 115 Volt pumps up to 1.5 HP and maximum 20 Amps, or 230 Volt pumps up to 3 HP and 17 Amps BulletPoint5 : ADJUSTABLE CUT-IN/OUT PRESSURE: see product label under cover for adjustment instructions Capacity : 1.4 pounds CircuitType : 1-way Color : Black ConnectivityProtocol : X-10 ConnectorType : Screw ControlMethod : touch ExternallyAssignedProductIdentifier1 : 010121130814 ExternallyAssignedProductIdentifier2 : 0010121130814 ExternallyAssignedProductIdentifier3 : 00010121130814 IncludedComponents : Centerless Grinding Wheel ItemName : Red Lion 30-50 PSI M4 Low Pressure Pump Protection Cut-Off Switch for Well Pumps and Jet Pumps, Black, 640134 ItemPackageDimensions_Height : 24.9 centimeters ItemPackageDimensions_Length : 9.4 centimeters ItemPackageDimensions_Width : 20.2 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : electronic-pressure-switches Manufacturer : Red Lion Material : Metallic substances and durable plastics Material1 : Steel Material2 : Plastic MaximumCurrent : 26 amps ModelName : 640134 ModelNumber : 640134 MountingType : Wall Mount NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPositions : 1 OperationMode : automatic PackageLevel : unit PartNumber : 640134 PowerSourceType : ac ProductDescription : This pressure switch is only used as an accessory to control the automatic power-on and power-off of the pump, and does not have a boosting function itself ProductSiteLaunchDate : 2014-09-05T08:47:28.496Z RecommendedUsesForProduct : Powering pneumatic tools for various applications Size : 0.25 Inch Style : Cut-off Switch for Well Pump SupplierDeclaredDgHzRegulation : not_applicable SwitchType : Pressure Switch TerminalType : Screw UnitCount : 1 UnspscCode : 30000000 Voltage : 120 volts