User's Manual

6
Turning On/Off the CK21
6
Turning On
When the CK21 is turned off, press and hold the MFB for 3 seconds until you hear
a short beep, the LED indicator will be solid blue for 3 seconds. The CK21 is now
turned on.
Turning Off
At any state after the CK21 is turned on, press and hold the MFB for 3 seconds
until you hear a long beep, the CK21 will be turned off, the LED indicator will be
solid red for 3 seconds at the same time.
Note: If the CK21 has been paired successfully, it will connect to the device that
you last connected automatically.
7
Pairing
Before you use the CK21 the first time, you must pair the unit with a
Bluetooth-enabled mobile phone. This operation guide is based on a Bluetooth
enabled phone as the host device. Please refer to the following steps to pair CK21
speakerphone:
(a) Put the CK21 close to a Bluetooth-enabled mobile phone less than 1 metre
distance.
Important:
It is recommended that you fully charge the speakerphone before leaving it unused for
along time. To prevent overdischarge endangers the battery, you are recommended to
fully charge the speakerphone each 2 months.