Thermocouple Module,It is an A / D converter using the MAX31856 IC. Thermocouples, which measure with high precision, give mV analog output and these signals cannot be detected by microcontrollers. This card converts the signals to digital data with high precision and allows you to fer them to your microcontroller with SPI communication protocol. Generally, different A / D converters and amplifiers are used for different types of thermocouples, while this module is compatible with all types of thermocouples (K, J, N, R, S, T, E, B). It is compatible with development boards such as for Arduino and Raspberry Pi with the feature of supporting SPI interface. Technical Specifications Provides High Accuracy Thermocouple Temperature Readings Automatic Linearization Correction Including 8 Types of Thermocouples Color: Blue Material: Plastic 0.15% (max, -20℃ - +85℃) Full Scale Linearity 19-Bit, 0.0078125 degree Thermocouple Temperature Resolution +0.7 degrees C (max. -20 degrees C to +85 degrees C) accuracy Thermocouple inputs are protected against overvoltage conditions up to 45V System Fault Management and Troubleshooting Simplifications Open Thermocouple Detection Low Temperature Diagnostics 50Hz / 60Hz Noise Rejection Filtering System TSSOP Package 14-Pin Weight: 5.0g Package Contents: 1 x MAX31856 thermocouple module set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.