The E-Monitoring Tool is a smartphone application designed to monitor the status of a Mitsubishi Electric's Ecodan Air Source Heat Pump system. This tool allows the user to check the system's water temperature, room temperature, actuator status, and internal control status. The data is transmitted from the dedicated cable to the smartphone via Bluetooth, enabling users to grasp the system's status in real-time. An official E-Monitoring tool cable is required to connect to the system.