The Monitor adapter is part of the MiHome home automation range. The Monitor adapter allows you to monitor the power being used by an attached appliance. The Mi|Home monitor adapter sends energy data information back to the Raspberry Pi using the Raspberry Pi transceiver board. This allows you to monitor how much energy each device is using. Monitor adapter can display the following: Time, Power, Reactive Power, Voltage and Frequency. The Monitor adapter cannnot be switched bythe Raspberry Pi and only transmits information.