The VE.Bus Smart Dongle by Victron Energy serves a dual purpose:

Primarily, it acts as the Bluetooth interface for Victron's VE.Bus inverter/chargers, including models such as MultiPlus, Quattro, MultiPlus-II, MultiGrid, MultiGrid-II, and VE.Bus Phoenix Inverters. Once installed correctly, the VE.Bus Smart Dongle enables users to utilize Victron's free mobile application, VictronConnect, allowing for monitoring of the connected device's operational status. Additionally, it provides limited remote control capabilities, such as adjusting the AC Input current limit (if applicable) and toggling between Off, On, Invert-Only, and Charge-Only modes. (Please note that certain features may vary depending on the model and system configuration.)

Secondly, the VE.Bus Smart Dongle functions as a voltage and temperature sensing device for the linked inverter/charger, offering compatibility with all models when installed and connected properly.

For basic monitoring needs, particularly in smaller systems where a GX device may be impractical or unnecessary, the VE.Bus Smart Dongle presents an excellent solution.