SENSOPER MC-EX-TC4 expansion module is an advanced module can be use with CPU module. This Thermocouple Input module have I2C interface via SPI for establish communication between CPU module. Changing DIP switches configuration the I2C address can be changed. Four Thermocouple Inputs read -270 °C to +1800 °C range heat source readings. This module internal operation power is 5V DC / 30mA. The 40 pin board to board connectors were included for make connection between CPU module or other expansion modules.