MAX6675 is the United States MAXIM production with cold end compensation, linear correction, thermocouple disconnection detection of 12 bit resolution serial K type thermocouple analog to digital converter.The main features of MAX6675 are as follows1, simple SPI serial port temperature value output.2, 2 degrees Celsius to 1024 degrees Celsius temperature range, the converter temperature resolution is 0.25 degrees C.3, the film inside the cold end compensation.4, high impedance differential input.5, thermocouple disconnection detection.6, working voltage range of 3 ~ 5 5V, working current 50mA.7, the operating temperature range of -20 degrees C ~ 85.ESD signal 9, 2000V.Interface module:GND VCC SCK CS SOPower supply voltage:3~5V DCThe size of the module:15mm*25mm