AVLink TWS20 User manual

TWS20 TWS Earphone
Operation manual
Product name：TWS Earphone
FCC ID: R2M-TWS20
Manufacturer: AVLink Industrial Co., Ltd
Address: 7F., A1 Bldg., 1st Shuichanjingwan Industrial Area,
Nanchang Village, Gushu, Bao'an Dist, Shenzhen, Guangdong, China
TABLE OF CONTENTS
1. Introduction
2. Appearance
3. Operation procedure

1. Introduction
TWS20 is a binaural wireless connection stereo Bluetooth headset. It uses the
original phase technology 5.0 chip design to realize wireless transmission of high-
quality stereo music between the left and right earphones and the mobile phone.
Connect to the mobile phone, instead of the traditional TWS, mobile phone
music needs to be transmitted through the host and then to the slave for music
and sound transmission. The left and right earphones directly connected to the
mobile phone have the strongest anti-interference, the lowest delay, better sound
quality, and lower
Radiation and other advantages greatly improve the convenience and safety of
TWS headsets. The product design is compact and comfortable to wear. With the
400mA large-capacity charging box, it realizes an integrated charging and storage
design, which greatly improves the product's battery life.
2. Appearance

3. Operation procedure
Function
Operation
Result
Power On
The shutdown mode, Long press the
multifunction key 2 seconds
The blue light 2 seconds,
Power on reminding
Power Off
The standby mode, Long press the
multifunction key 3 seconds
The red light 2 seconds then
off，Power off reminding
Pairing
Boot automatically back Connected,
Don't succeed, enter the auto pairing
mode
Paired Successfully Connected
reminding
Volume Adjustment
Short Press Volume Up or Volume
Down
If user press Volume Up or
Volume Down to choose the
volume, when volume is in
maximum will beep
reminding,minimum isn’t
have any reminding
Play、pause
Play music
Press MFB Once
(Re-dialling)
Press MFB Twice
Standby
End call
Press MFB once
Talk
Receive Call
Press MFB once
Call
Reject Call
Long Press MFB Twice
Call
transferring call
None
None
Multipoint for HFP and
A2DP
In pairing mode, connect to A phone
first, and then turn A phone blue
Turn off the tooth function, turn on
the bluetooth of mobile phone B and
connect with BS36
Connect, and then restart the
Bluetooth function of mobile phone
A and connect
Paired Successfully Connected
reminding
Initialization function
Add or subtract the key for 5
seconds at the same time in the
matching state
DiDi reminding
Mobile TV frequency
Frequency function of Mobile phone
entering TV in playing State
None

Item
Visual Indication
Audio Indication
Charge
Charging
Lighting in Red (LED)
None
Fully charged
Lighting in Blue (LED)
None
Battery low
(in Standby mode )
Flash Red (LED) When
battery voltage is 3.5V or
above, LED blinking normally.
Below 3.3V, LED show
“Battery Low”indication.
And auto power off as below
3.0V
Battery low
power On
The Blue light 2 seconds
Power on
power Off
The Red light 2 seconds and
then Off
Power off
Pairing
Blinking in Blue and Red
alternatively (LED) (last for 4-
5 minutes) (0.8 sec. Red/ 0.8
sec. Blue)
Ready to pair
Paired Successfully
The blue light flashes slowly
twice every 3 seconds
Connected
Disconnect
The blue light flashes twice
every 2 seconds
Disconnected
Incoming telegram
Blue light flashes once per
second
Electronic sound prompt
One the line
Blue light flashes 2 times in 2
seconds
End of the call
Blue light flashes 2 times
Reset
Red and blue lights are on at
the same time for 1 second
DiDi reminding
Auto power off
Pairing unsuccessful (about 5
minutes) auto power off
Power off reminding，Power
off
NOTE: This equipment has been tested and found to comply with the limits for a
Class B digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions,
may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which

can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help
Changes or modifications not expressly approved by the party responsible for compliance
could
void the user's authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.