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ML-20U OPERATING INSTRUCTIONS
Model Number: ML-20UProduct
Name: Bluetooth Speakerphone
Product Dimension: 215x67x70mm
Standard Color: Black/White/Red
1.
Key Feature
[Bluetooth
Audio]
Bluetooth
3.0+EDR,
maximum distance 10m.
[Bluetooth Call] Clear voice, no echo.
[MP3/WAV Playback] Playback MP3, WAV
files directly from TF card.
[FM Radio] Digital FM radio receiver.
[Audio Input] Stereo audio input socket,
enable connection to PC, digital media
player, mobile phone, etc..
[Breakpoint Memory] Auto memorized last
playback track and volume.
2.
Technical Specifications
Rated Power: 3W + 3W
Nominal Power: 2.5W + 2.5W
Operation Voltage: DC5V
Frequency Response: 100Hz-20KHz
S/N Ratio:
≥
80dB
THD: <1%
Bluetooth Audio Channel: Stereo
Audio Inputs: Bluetooth, line in
Speaker Driver: 40mm, 4
Ω
, 3W
Sound System: 2.0 Channel
Input Power: External DC5V/1200mA
Control Mode: Button Control
Input Sensitivity: 800mV±50mV
Weigh: Approximately 374g
3.
Music Playback Operation
The product powered up with automatic
external source detection. After power up,
product enter Bluetooth mode. If product
detects is micro SD card or line in
detected, it will playback from there.
Could also use MODE button to change mode.
4.
Button Definitions
[ON/OFF]: Long press to toggle
power ON/OFF.
[PLAY]: Play/Pause/Stop.
Short Press: In Bluetooth/TF/AUX mode,
Play/Pause/Stop; In FM mode, auto search
and memorize FM stations.
[CALL]: Off-Hook/On-Hook Call.
Short Press: In Bluetooth mode, answer
incoming call or end current call.
Long Press: In Bluetooth mode, reject
incoming call.
[VOL-]: Volume Decrease/ Previous
Track/Previous FM Station.
Short
Press:
In
Bluetooth/TF
mode,
previous track; In FM mode, search for
previous station
Long Press: In Bluetooth/TF/FM/AUX mode,
decrease volume.
[VOL+]: Volume Increase/Next
Track/Next FM Station.
Short Press: In Bluetooth/TF mode, next
track; In FM mode, search for next station.
Long Press: In Bluetooth/TF/FM/AUX mode,
increase volume
[MODE]: Audio Mode Change.
Change mode between Bluetooth/TF/FM/AUX.
5.
Socket Definitions
[DC5V]: Power Input Socket.
Connect power input socket using USB
charging cable to PC’s USB socket or
external DC5V USB adaptor. In FM mode, use
USB charging cable as FM antenna.
[TF]: Plug in TF card for MP3, WAV music
playback.
[USB]: Plug in USB thumb drive for MP3,
WAV music playback.
[AUX]: Plug in audio cable for external
music playback.
[Headphone]: Plug in stereo headphone to
listen to current played music. At this
moment, speakers will be muted.
[MIC]: Voice microphone. Speaker directly
to the microphone will enhance voice call
quality. (Not for plug in)
6.
Indicator Light Introduction
RED Indicator Light: Continuously lit
when changing. Off when complete charging.
BLUE Indicator Light: Bluetooth indicator
light.
Fast
blink
during
Bluetooth
pairing. Continuously lit when successful
paired. Slow blink in normal operation.
GREEN
Indicator
Light:
Bluetooth
indicator light. Blink alternatively with
