Meaning of the status LED

lights up green

A radio link to the receiver is established. The accupack of the bodypack transmitter is sufficiently charged.
flashes green

The PAIR button has been short-pressed. Paired devices are being identified.
flashes alternately green and red

The PAIR button has been long-pressed. The bodypack transmitter establishes a radio link to a receiver whose PAIR button has also been long-pressed.
lights up yellow

The bodypack transmitter has been muted with the MUTE switch. In addition, Muted is displayed on the display panel.
flashes yellow

The firmware is being updated.
lights up red

No radio link to a receiver. In addition, No Link is displayed on the display panel.
flashes red

The accupack capacity of the bodypack transmitter is only sufficient for max. 30 minutes of operation.