Select the terminal to which your source can be connected based on the maximum allowable voltage (see table below).
Most ADC terminals have two functions: ADC and low-voltage load control. Before measuring the voltage on the ADC, turn off the appropriate low-voltage load control output. For example, if you are connecting to terminal A1, turn off A1_OUT in the web interface (the Relays & FETs section).
Connect your source to the terminal. The voltage value will immediately appear in the веб-интерфейсе in the ADCs device. The value is also translated to the MQTT message systemMQTT.