HumanTechnik Introson 2.4 Mode D'emploi page 20

Charging the batteries
1. Select the On/Off Switch in the headset receiver to OFF
position.
2. Place the headset receiver on the transmitter, make
sure the charge contact touches the charge cins on the
Transmitter.
3. The charging process starts automatically. LED indicator
of main battery then glows in red constantly. It will glow
in green about 2 hours after the battery is fully charged.
4. A spare battery is provided for sustained enjoyment.
Simply insert it into the transmitter for charging.
LED indicator of spare battery will then glow in red constantly.
It will glow in green about 2 hours after it is fully charged.
Warning:
Batteries (battery pack or batteries installed) shall not be exposed to excessive heat such
as sunshine, fire or the like. Never use another type of battery or non-rechargeable batteries
to replace the rechargeable batteries supplied. When the headphones are not in use, move
the switch to the OFF position to avoid damaging the batteries.
The batteries must always be fully charged before first use. An initial 3 hours charge is
required to guarantee an acceptable service life for the rechargeable batteries. Always en-
sure that the headset receiver is switched to OFF position while the batteries are charging.
Excessive sound pressure from earphones and headphones can cause hearing loss.
Important:
This unit should be operated with the special rechargeable batteries only. When replacing
the batteries or when disposing of the unit, always comply with applicable laws relating to
the disposal of batteries. Please place them in a proper disposal container to ensure that
they are eliminated safely and in an environmentally friendly way.
20 English
Ilustration example: Underchin receiver