This item is well made of for and practical use. It is with good waterproof, and anti-rust performance. With professional design and to use, it is really a wonderful waterproof temperature sensors choice. Feature - ColorBlack - Material: Polymer. - Length: 100cm / 39.4 inch. - Nominal resistance: (2 centigrade): (commonly used) 1.5K, 2K, 5K, , , , 30K, 47K, , 100K, 1 , 200K, 230K, 500K, 1M, 1.2M. - Resistance accuracy: &plusmn; 1%, &plusmn; 2%, &plusmn; 3%. - / 50 (85): (common) 3380K, 3435K, 3470K, 3600K, 3899K, 39 , 3990K, 40 , 4100K, 42 , etc. - accuracy: &plusmn; 1% - Use temperature range: -40 degree centigrade ~ +300 degree centigrade (sub-high temperature and low temperature sensor, temperature chip and production process is different) - Dissipation power factor: &ge; 5 mW / degree centigrade ( ) - Maximum rated power: 45mW - Thermal time constant: <= 3S ( ) - Resistance temperature coefficient: -2 ~ -5% / degree centigrade - Insulation performance: 500V test single insulation resistance &ge; 100M&Omega; - Pressure resistance: 1500V , 5s, 0.5mA no breakdown - Wide measuring range. - Waterproof, and anti-rust. Package list: 1 x set of 5PCS 1M Waterproof Temperature Sensors Temperatures Transducers NTC Thermistor Probe Digital Temperature Transimitter Extension Cable