Features: Wide Compatibility: Designed for series pool and spa heaters (models 125 400), this temperature sensors ensures excellent fit and seamless operate , eliminating compatibility concerns during replacement. Enhanced Sensitivity: Features upgraded technology for improved temperature detection accuracy, providing faster response times compared to traditional sensors in pool and spa environments. strong PVC Construction: Made with erosion resistant PVC component , ideal for prolonged use in moist conditions around pools and spa, ensuring long term reliability. Easy Installation: Simple plugs and play design requires not special tools, offering convenient installation for homeowners maintaining their pool heating systems. Multi Model Replacement: suitable for R0456500, R0456600, R0523900, R0477300 and 6204 209 models, serving as a versatile solution for various equipment needs in residential settings. Specifications: Component : PVC Part number: 0456500 Length: about 2m/6.6foot Package Includes: 1xTemperature sensors note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.