CITROEN DS4 Owner's Handbook Manual page 290

"Multimedia":
audio systems, steering mounted audio
controls, speakers, Hi-Fi module, Bluetooth
hands-free system, portable satellite navigation
system, semi-integral support bracket for
portable navigation system, mapping update
CD, driving assistant, portable video screen,
portable video support bracket,
230 V/50 Hz socket, 230 V/12 V adaptor,
iPhone ® compatible mobile phone charger,
mobile phone/smartphone bracket, Wi-Fi on
board...
Installation of radio
communication
transmitters
Before installing any after-market radio
communication transmitter, you can
contact a CITROËN dealer for the
specification of transmitters which can
be fitted (frequency, maximum power,
aerial position, specific installation
requirements), in line with the Vehicle
Electromagnetic Compatibility Directive
(2004/104/EC).
By visiting a CITROËN dealer you can also
obtain cleaning and maintenance products
(interior and exterior) - including ecological
products in the "TECHNATURE" range,
products for topping up (screenwash...), paint
touch-up pens and aerosols for the exact
colour of your vehicle, refills (sealant cartridge
for the temporary puncture repair kit...), ...
Depending on the legislation in force
in the country, it may be compulsory
to have a high visibility safety vest,
warning triangle, breathalyzers and
spare bulbs and fuses available in the
vehicle.
The fitting of electrical equipment
or accessories which are not
recommended by CITROËN may result
in a failure of your vehicle's electronic
system and excessive electrical
consumption.
Please note this precaution. You
are advised to contact a CITROËN
representative to be shown the range
of recommended equipment and
accessories.