TDK B57703M0502G040 NTC Temperature sensor -55 up to +125 °C 5 kΩ

Model (sensors): NTC; Product size (Ø): 8.50 mm; Resistance: 5 kΩ; Temperature reading range (max.): +125 °C; Temperature reading range (min.): -55 °C

Price: £ 8.49 from Conrad Electronic