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Regulatory Notices

Operating Ambient Temperatures

•  Operating temperature: +14 to 113°F (-10 to 45°C)
•  Relative humidity: 5% to 90%, noncondensing
•  Storage temperature: -22 to +158°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.

DC symbol 

 is the DC voltage symbol.

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!
The following basic safety precautions should always be followed to 

reduce risk of fire, electrical shock, and other personal injury.

 

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.

•  During the process of storage, transportation, and 

operation, please avoid collision and crash of the device.

•  Please attempt not to dismantle the device by yourself. 

In case of any discrepancy, please contact the appointed 
maintenance center for repair.

•  Without prior written consent, no organization or individual 

is permitted to make any change to the structure or 
the safety design of the device. Yealink is under no 
circumstance liable to consequences or legal issues 
caused by such changes.

• 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.
• Place the device on a stable and level platform.
• Please place no heavy objects on the device in case of 

damageand deformation caused by the heavy load.

• Keep at least 10 cm between the device and the closest 

object for heat dissipation.

• 

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.

• Keep the device away from any household appliance with 

strong magnetic field or electromagnetic field, such as a 
microwave oven or a refrigerator.

 Operating Requirements

• Do not let a child operate the device without guidance.
• Do not let a child play with the device or any accessory in 

case of accidental swallowing.

• Please use the accessories provided or authorized by the 

manufacturer only.

• The power supply of the device shall meet the requirements 

of the input voltage of the device. Pleaseusethe provided 
surge protection power socket only.

• Before plugging or unplugging any cable, make sure that 

your hands are completely dry.

• Do not spill liquid of any kind on the product or use the equipment 

near water, for example, near a bathtub, washbowl, kitchen sink, 
wet basement or near a swimming pool.Do not tread on, pull, or 
over-bend any cable in case of malfunction of the device.

•  During a thunderstorm, stop using the device and disconnect 

it from the power supply. Unplug the power plug and the 
Asymmetric Digital Subscriber Line (ADSL) twisted pair (the 
radio frequency cable) to avoid lightning strike.

•  If the device is left unused for a rather long time, disconnect it 

from the power supply and unplug the power plug.

•  When there is smoke emitted from the device, or some abnormal 

noise or smell, disconnect the device from the power supply, 
and unplug the power plug immediately. Contact the specified 
maintenance center for repair.

•  Do not insert any object into equipment slots that is not part of 

the product or auxiliary product.

•  Before connecting a cable, connect the grounding cable of the 

device first. Do not disconnect the grounding cable until you 
disconnect all other cables.

 Cleaning Requirements

•  Before cleaning the device, stop using it and disconnect it from 

the power supply.

•  Use a piece of soft, dry and anti-static cloth to clean the device.
•  Keep the power plug clean and dry. Using a dirty or wet power 

plug may lead to electric shock or other perils.

 ENVIRONMENTAL RECYCLING 

Never dispose of the device with domestic 

waste

Ask your Town Council about how to dispose of it 
in an environmentally friendly way. The cardboarc 
box, plastic packaging and player components may 
be recycled in accordance with prevailing recycling 

regulations in your country. 

Always adhere to prevailing regulations

Those who fail to do so may be fined or prosecuted in accordance with 

the law. The crossed out garbage can that appears on the device means 
that when it has reached the end of its useful life, it should be taken to 
a special waste disposal centre and treated separately to general urban 
waste.

Troubleshooting

The unit cannot supply power to Yealink device.
There is a bad connection with the plug.
1.  Clean the plug with a dry cloth.
2.  Connect it to another wall outlet.
The usage environment is out of operating temperature range.
1.  Use in the operating temperature range.
The cable between the unit and the Yealink device is connected 
incorrectly.
1.  Connect the cable correctly.
You cannot connect the cable properly.
1.  You may have connected a wrong Yealink device.
2.  Use the correct power supply.
Some dust, etc., may be in the port.
1.  Clean the port.
Contact your dealer or authorized service facility for any further questions.

Contact Information

YEALINK NETWORK TECHNOLOGY CO.,LTD.
No.666 Hu’an Rd,Huli District Xiamen City, Fujian, P.R.C
YEALINK (EUROPE) NETWORK TECHNOLOGY B.V.
Sir Winston Churchillln 299 k, 2288DC Rijswijk
YEALINK (USA) NETWORK TECHNOLOGY CO., LTD.
999 Peachtree Street Suite 2300, Fulton, Atlanta, GA, 30309, USA
Made in China

Summary of Contents for SkySound CM20

Page 1: ...Quick Start Guide V1 0 English Deutsch Fran ais Espa ol SkySound CM20 Unboxing Video...

Page 2: ...ket requires the load bearing capacity of your ceiling frame to be no less than 2 8KG The adjustable range of the bracing bridge is 400 438mm 600 638mm 2 The slot width compatibility of the ceiling ti...

Page 3: ...ver it with the dust cover 6 Install CM20 along the opening circular of the bracket pushing it towards the ceiling 7 Hold the device by hand and securely tighten the three screws on its surface in a c...

Page 4: ...nden Installationsschritte zeigen die Verwendung des St tzstegs zur sicheren Befestigung des CM20 Wenn Ihre Decke eine Tragf higkeit von mehr als 1 38 kg hat k nnen Sie auf die Halterung als zus tzlic...

Page 5: ...r Oberfl che im Uhrzeigersinn fest Richten Sie die Unterseite des CM20 so aus dass sie b ndig mit den Deckenplatten abschlie t Befestigen Sie die Mesh Abdeckung magnetisch am CM20 Installation abgesch...

Page 6: ...ntation du mat riel Port RJ 45 R initialiserm Appuyez longuement pendant 5 secondes pour r initialiser 3 Installation D montez le plafond et tracez des lignes auxiliaires au milieu de la longueur et d...

Page 7: ...pport en le poussant vers le plafond 7 Tenez l appareil la main et serrez fermement les trois vis de sa surface dans le sens horaire Ajustez la surface inf rieure du CM20 pour l aligner avec les dalle...

Page 8: ...Poste de longitud ajustable opcional 6 2Introducci n al hardware Puerto RJ 45 Restablecer Pulsar durante 5 segundos para restablecer 3Instalaci n Retire el techo y dibuje l neas auxiliares en el medio...

Page 9: ...con la mano y ajuste firmemente los tres tornillos sobre la superficie en el sentido de las agujas del reloj Ajuste la superficie inferior del CM20 para alinearlo al ras de las placas del techo Conect...

Page 10: ...turer only The power supply of the device shall meet the requirements of the input voltage of the device Pleaseusethe provided surge protection power socket only Before plugging or unplugging any cabl...

Page 11: ......

Page 12: ...hen k nnen Mit branchenf hrender Qualit t innovativen Technologien und der benutzerfreundlichen Handhabung sticht Yealink als einer der besten Anbieter in mehr als 140 L ndern und Regionen hervor Yeal...

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