Specification BatteriesRequired : 1 Brand : Mxmoonant BulletPoint1 : [Constant Temperature Control]: Use the temperature knob to set and maintain the desired water temperature from 0 to 45°C. Once the desired temperature is set, the thermostat continuously monitors and adjusts the operation of the heating system to maintain the water at a constant temperature. BulletPoint2 : [Connect with Circulation Pump]: Spa heater have to connected with circulation pump with power of more than 0.5HP. Smaller pumps may not provide enough water flow to activate the heater. Also, the spa thermostat has to be with a circulation pump rather than a booster pump or submersible pump. BulletPoint3 : [1.5" PVC plumbing]: Mxmoonant hot tub heater is equipped with 1.5" PVC pipe fittings, so you should use SCH 40 1.5" PVC pipe for the plumbing connection. A smaller size may result in insufficient water flow. If you want to use other pipe sizes, please note that everything should start with 1.5". BulletPoint4 : [Tips for Heating]: It's recommended to fill the hot tub with hot water instead of cold water, as cold water can impact the heating performance. Additionally, it's advisable to limit the water capacity to no more than 400 US gallons and to use an insulation cover to retain the temperature. Otherwise, it may take a long time or may not heat up at all. BulletPoint5 : [No Plug]: The pool thermostat does not come with a plug as it is a high power device. It should be connected to a 20A GFCI circuit breaker. It is recommended that you find a professional electrician to complete the circuit connection. CircuitType : 2-way Color : BLACK ConnectivityProtocol : X-10 ControlMethod : touch CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 852673915255 ExternallyAssignedProductIdentifier2 : 0852673915255 ExternallyAssignedProductIdentifier3 : 00788379696313 GpsrSafetyAttestation : 1 Hazmat : auto-grounding IncludedComponents : Water Temperature Sensor InternationalProtectionRating : IP00 IsAssemblyRequired : 1 ItemDisplayDimensions_Height : 4.9 inches ItemDisplayDimensions_Length : 18.5 inches ItemDisplayDimensions_Width : 4.9 inches ItemDisplayWeight : 5 pounds ItemName : Mxmoonant Hot Tub Thermostat, 2KW 110V Spa Bathtub Heater Thermostat with Temperature Control for 400 Gals Hot Tub, Whirlpool Bathtub, Spa, Small Pool (No Plug) ItemPackageDimensions_Height : 22.86 centimeters ItemPackageDimensions_Length : 17.145 centimeters ItemPackageDimensions_Width : 18.415 centimeters ItemPackageQuantity : 1 ItemShape : Rectangular ItemTypeKeyword : swimming-pool-heater-and-heat-pump-parts Manufacturer : Mxmoonant Material : Aluminum Material1 : Plastic Material2 : Metal MeasurementAccuracy : High MeasuringRange : 78 to 82 degrees Fahrenheit ModelName : 77707-0010 ModelNumber : C2550-0011 MountingType : Panel Mount NumberOfBoxes : 1 NumberOfItems : 1 NumberOfPositions : 2 OperationMode : manual OutputType : Digital PackageLevel : unit PartNumber : C2550-0011 PowerSourceType : ac ProductDescription : A hot tub heater allows the user to control the water temperature to ensure it is maintained at a comfortable level for relaxation and enjoyment. This control allows for customisation based on individual preferences and weather conditions. With a spa heater, you can enjoy your spa all year round, regardless of the outside temperature. In colder months or climates, the heater will keep the water warm and inviting for year-round enjoyment. ProductSiteLaunchDate : 2022-05-13T06:07:48.719Z Size : small SpecificUsesForProduct : Measure and relay accurate temperature readings to the pool pump system. Style : 77707-0010 thermal regulator compatible with MasterTemp Pool and Spa Heaters SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SwitchType : Rocker UnitCount : 1 UnspscCode : 41112209 UpperTemperatureRating : 85 degrees_fahrenheit