HumanTechnik InfraLight A-4010-0 Mode D'emploi page 13

2
When you first charge the battery packs for the headset
receiver let them charge for at least 14 hours. Only use
Infra Light II battery packs.
The Infra Light II package includes two battery packs and one
dummy.
3
Please make sure that the »line of
sight« between your transmitter
and receiver is not obstructed.
Charging control light
Dummy
english 13