Platinum RTD Thermometer °CModel 869 Digital RTD Thermometer measures temperatures from -220 to 630 °C. Compatible with either 3 or 4 wire RTDs, temperature measurement is performed with a best accuracy of ± 0.3 °C. This thermometer is specially constructed with a heavy duty ABS case specifically designed for industrial use. Model 869 reads in °C. An optional tilt stand/belt clip, Part Num