Victron VE.Direct Bluetooth Smart dongle. By connecting the VE.Direct to Bluetooth Smart dongle, you can view your BMV or MPPT information on iOS and Android devices using the VictronConnect app. You get wireless access to information such as battery status, solar panel energy and many other useful data. The dongle can read data from any product with a VE.Direct port, such as BMV-70x series battery monitors, Phoenix inverters with VE.Direct port, MPPT Solar charge controllers. The Victron VE.Direct Bluetooth Smart dongle uses Bluetooth Low Energy, the low power version, which is an Internet of Things technology.