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The following figure shows the connection between the
IP phone and the Sennheiser wireless headset.
The following figure shows the connection between the
IP phone and the Plantronics wireless headset.
Regulatory Notices
Operating Ambient Temperatures
Operating temperature: +32 to 104°F (0 to 40°C)
Relative humidity: 5% to 90%, noncondensing
Storage temperature: -22 to +160°F (-30 to +70°C)
Warranty
Our product warranty is limited only to the unit itself, when used normally in accordance with
the operating instructions and the system environment. We are not liable for damage or loss
resulting from the use of this product, or for any claim from a third party. We are not liable
for problems with Yealink device arising from the use of this product; we are not liable for
financial damages, lost profits, claims from third parties, etc., arising from the use of this
product.
Explanation of the symbols
DC symbol
is the DC voltage symbol.
WEEE Warning symbol
To avoid the potential effects on the environment and human health as a result of the
presence of hazardous substances in electrical and electronic equipment, end users of
electrical and electronic equipment should understand the meaning of the crossed-out
wheeled bin symbol. Do not dispose of WEEE as unsorted municipal waste and have to
collect such WEEE separately.
Restriction of Hazardous Substances Directive (RoHS)
This device complies with the requirements of the EU RoHS Directive. Statements of compliance can be
obtained by contacting support@yealink.com.
Safety Instructions
Save these instructions. Read these safety instructions before use!
General Requirements
Before you install and use the device, read the safety instructions carefully and
observe the situation during operation.
During the process of storage, transportation, and operation, please always keep the
device dry and clean, avoid collision and crash.
Please attempt not to dismantle the device by yourself. In case of any discrepancy,
please contact the appointed maintenance center for repair.
Please refer to the relevant laws and statutes while using the device. Legal rights of
others should be respected as well.
Environmental Requirements
Place the device at a well-ventilated place. Do not expose the device under direct
sunlight.
Keep the device dry and free of dusts.
Do not place the device on or near any inflammable or fire-vulnerable
object, such as rubber-made materials.
Keep the device away from any heat source or bare fire, such as a candle
or an electric heater.
Operating Requirements
Do not let a child operate the device without guidance.
34
Sennheiser
Wireless
Headset
Plantronics
Wireless
Headset
4


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