2 | SR 2020-D
Important safety instructions
Risk of fire due to overloading
Do not overload wall outlets and extension cables as this may result in fire and electric
shock.
Replacement parts
When replacement parts are required, be sure the service technician uses replacement parts
specified by Sennheiser or those having the same characteristics as the original part. Unau-
thorized substitutions may result in fire, electric shock, or other hazards.
Danger due to high volume levels
This product is used for commercial purposes. Commercial use is subject to the rules and
regulations of the trade association responsible. Sennheiser, as the manufacturer, is there-
fore obliged to expressly point out possible health risks arising from use.
This product is capable of producing sound pressure levels exceeding 85 dB(A). 85 dB(A) is
the sound pressure corresponding to the maximum permissible volume which is by law (in
some countries) allowed to affect your hearing for the duration of a working day. It is used
as a basis according to the specifications of industrial medicine. Higher volumes or longer
durations can damage your hearing. At higher volumes, the duration must be shortened in
order to prevent hearing damage.
The following are sure signs that you have been subjected to excessive noise for too long a
time:
• You can hear ringing or whistling sounds in your ears.
• You have the impression (even for a short time only) that you can no longer hear high
notes.
Inform all users of these risks and ask them to set the volume to a moderate level if neces-
sary.
Intended use
The product is designed for indoor and outdoor use.
The product can be used for commercial purposes.
It is considered improper use when the product is used for any application not named in the
corresponding instruction manual.
Sennheiser does not accept liability for damage arising from improper use or misuse of this
product and its attachments/accessories.
Before putting the products into operation, please observe the respective country-specific
regulations!
Sennheiser is not liable for damages resulting from the loss of connection due to flat or over-
aged (rechargeable) batteries or exceeding the transmission range.
