Features PRE WIRED: The thermistor temperature head is pre wired for use with the heating block supporting the thermocouple. APPLICABLE MODELS: This thermistor temperature sensing head is suitable for most 3D printer models such as for A8, for A6, for A2, for Ender. INSULATED MATERIAL: The wire part of this thermistor sensing head is made of high temperature PTFE with good insulation and long service life. WIDE COMPATIBILITY: This thermistor temperature sensing head is widely used in 3D printer extruder heating bed or hot end. LARGE MEASUREMENT RANGE: With a measurement range of ‑40℃ to 260℃, this thermistor temperature sensing head is ideal for high temperature printing. Specification: Item Type: NTC Thermistors Sensor Material: PTFE, red copper Nominal Resistance R25(25℃): 100k Resistance Accuracy: ±1% B Value: 3950 B Value Accuracy: ±1% Terminal: XH2.54-2P Operating Temperature Range: -40℃-260℃ Wire Length: Approx. 1m / 3.28in Applicable to: For A8, for A6, for A2, for Ender and most other 3D printer models Package List: 5 x NTC Thermistors Sensor Package List 5 x NTC Thermistors Sensor