The MAX6675 sensor and module make use of the K-Thermocouple to digital converter IC to provide a microcontroller-compatible digital serial interface (SPI compatible) to provide accurate temperature compensated measurement of the supplied K-Type thermocouple sensor. It has a 12-bit resolution providing temperature readings from 0oC to 1024oC (max temperature of the supplied sensor is 450oC) with a resolution of 0.25oC. Screw terminals allow for connection to the thermocouples spade connectors and a 5-pin standard 0.1″ header provides an interface to a microcontroller such as an Arduino development board.
The supplied thermocouple sensor has a diameter of 4.5mm with a 6mm threaded mounting bolt. The total length of the sensor including cable and spade connectors is ~50cm.