(1) SPI interface for easy connection with Arduino and microcontrollers; soldering distance is 2.54mm. (2) Temperature measurement range of 0℃~1024℃; converter temperature resolution is 0.25°C. (3) On-chip cold junction compensation. High-impedance differential input. Thermocouple disconnection detection. (4) Wide operating voltage range: 3.0~5.5V; operating current: 50mA; operating temperature range: -20℃~85℃. (5) Module size: 15mm*28mm. Includes a 3mm diameter screw hole; K-type thermocouple wiring position uses 301 standard terminal blocks for convenience and simplicity. A thermocouple's function is to detect the temperature difference between its and cold junctions. The junction temperature of a thermocouple can vary from 0℃ to 1023.75℃. The cold junction temperature is the ambient temperature around the circuit board where the MAX6675 is mounted, which varies from 20℃ to 85℃. Even when the cold junction temperature fluctuates, the MAX6675 can still accurately detect changes in the junction temperature. The MAX6675 detects and corrects for ambient temperature changes through cold junction compensation. This device converts the ambient temperature into a temperature compensation voltage via an internal temperature sensing diode. To generate the actual thermocouple temperature measurement, the MAX6675 measures the voltage from both the thermocouple output and the output of the sensing diode. The internal circuitry of this device sends the diode voltage and thermocouple voltage to the ADC. Specifications Operating Voltage Range: 3.0~5.5V, Operating Current: 50mA Operating Temperature Range: -20°C~85°C Module Interface: GND VCC SCK CS SO Power Supply Voltage: 3~5V DC Module Dimensions: 15mm*25mm Screw Head Size: M6 Color: As Shown Material:Plastic+Metal Package Contents: 1*Temperature sensor 1 set of accessories Only the above package content, other products are not included. Note: Light reflection and different displays may