The integrated C-Bus Power Supply can be enabled or disabled via the front panel by performing a short press on the top right channel button whilst holding down the top left channel button to toggle the enabled state.
By default, the integrated 200 mA C-Bus Power supply is disabled.
The enabled status of the integrated C-Bus power supply is shown on the Unit indicator.
(Green - Enable, Yellow - Disable).
For 5508RVF and 5504RVF