Specification Brand : Delixike BulletPoint1 : 42001-0063S 42002-0024S Stacked Flue Sensor BulletPoint2 : Replacement part number 42001-0063S 42002-0024S , check part number carefully before purchasing. BulletPoint3 : This flue sensor is used to prevent flue gas output from exceeding 500°F. When it fails to work, your system will display error code E05 or E06, which indicates it should be replaced. BulletPoint4 : Replacement takes only a few minutes and works great. The right sized fitting can be inserted into the hole and the pool heater fires up again. Eliminates the need for high priced or expensive repairs at the pool store. BulletPoint5 : If you are not very happy with this sensor, return it for a refund or exchange, we have a 1 year warranty! ExternallyAssignedProductIdentifier1 : 0730635583660 ExternallyAssignedProductIdentifier2 : 730635583660 ItemName : Delixike 42002-0024S Replacement Stacked Flue Sensor for Pool and Spa Heater Electrical Systems ItemPackageDimensions_Height : 0.51 inches ItemPackageDimensions_Length : 4.37 inches ItemPackageDimensions_Width : 2.09 inches ItemTypeKeyword : swimming-pool-heater-and-heat-pump-parts Manufacturer : Delixike ProductDescription : Replacement sensors for pool and spa heater electrical systems SupplierDeclaredDgHzRegulation : not_applicable