The VE.Bus Smart dongle is two products in one:

First of all it is the Bluetooth accessory for Victron’s range of inverter/chargers: Multiplus-I, MultiPlus-II, Quattros, and range extension of Phoenix Inverters with a VE.Bus port. When installed, use the VictronConnect App to monitor operation and also operate the system: change the input current limit as well as switch between Off, On and Charger-only modes.

Secondly it can work as a Voltage- and Temperature-sense device for the inverter/charger. This works with all models.

For monitoring, the device is a great alternative in caravans, smaller yachts and motor homes for which the Color Control GX or Cerbo GX are a step too far.

Please note that the MultiPlus or Quattro must be updated to the latest firmware in order to utilize the dongle.

Dongle Dimensions: H 0.9" x W 1.7" x D 4.2"
RJ45 Cable Length: 0.9m