Usage Tips: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 SpecificationsProvides High Accuracy Thermocouple Temperature ReadingsAutomatic Linearization Correction Including 8 Types of Thermocouples Color: BlueMaterial: Plastic0.15% (max, -20℃ - +85℃) Full Scale Linearity19-Bit, 0.0078125 degree Thermocouple Temperature Resolution+0.7 degrees C (max. -20 degrees C to +85 degrees C) accuracyThermocouple inputs are protected against overvoltage conditions up to 45VSystem Fault Management and Troubleshooting SimplificationsOpen Thermocouple DetectionLow Temperature Diagnostics50Hz / 60Hz Noise Rejection Filtering SystemTSSOP Package 14-PinWeight: 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.