Features: 1. The temperature controller sensor is designed to measure floor temperature for floor heating systems and can also be used to monitor pipeline water temperature, indoor temperature, and outdoor temperature. 2. The floor temperature sensor has a resistance of 10k ohm at 25C and is compatible with various radiant heating systems. 3. The NTC sensor features a rubber thermoplastic protective shell that is waterproof and rust-resistant, with a durable cable insulation layer to protect against damage. 4. Easy to connect to the thermostat, the sensor probe can be placed in close contact with the heating element to accurately measure floor temperature and communicate with the thermostat. 5. The cable is approximately 3 meters long, suitable for most standard installations. The sensor wires are non-polar and can be connected interchangeably to the thermostat's sensor terminals. Specifications: Sensor Housing Material: Rubber Color: White R25: 10k ohm Craft: Integrated Accuracy: 0.5% B25/50: 3950K B25/80: 4021K Length: approx. 3m / 9.84ft Weight: approx. 67g / 2.4oz Package List: 1 x Underfloor Heating Thermostat Sensor Probe Notes: 1. Please allow 02 cm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated the same; the item color displayed in photos may vary slightly from the actual product. Please refer to the physical item as the standard.