Cheap And Discounts SPI 3.3V/5V MAX31865 PT100/PT1000 RTD-to-Digital Converter Temperature Thermocouple Sensor Amplifier Board Module For Arduino Wholesale. Buy Directly From Merchant Kmust Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.