Great Well Electronic BT-020 User manual

BT-020 User's Guide
1. Introduction
1.1 Bluetooth technology
Bluetooth is a standard of wireless communication. Bluetooth technology is a kind of
short distance wireless communication technology and a kind of open global criterion.
The Bluetooth products work on universal industry, science, medical (ISM) frequency.
In order to avoid intervene, adopt jumping frequency technique, divide 2.4GHz ~
2.48GHz into 79 channels, transmit data at 1600 time/sec. The transmission distance
is about 10m (Class Ⅱ).
ISM frequency of 2.4GHz is free open frequency, no need to apply for license.
Operation instructions
Introduction
BT-020 Bluetooth headset key-press and key-press function explanation
A. MFB key-press: realize power on, power off, receiving, voice dialing, hang-up,
pairing etc.
B. Volume +: realize increasing volume, mute, rejecting incoming call, redialing etc
C. Volume -: realize decreasing volume etc.
Power on
In the state of power off, long press MFB, speaker will give off short BEEP sound. Blue light
fleshes. Then BT-020 will power on.
Power off
In the standby state, long press MFB, speaker will give off long BEEP sound. Blue light closes.
Then BT-020 will power off.
Pairing
Firstly, confirm BT-020 Bluetooth headset is in the state of power off and is in the effective
distance with other Bluetooth devices.
a. Long press MFB, speaker will send BEEP sound two times. Blue and red indicator will flash
alternately. Then BT-020 will in pairing state.
b. Open Bluetooth function of mobile phone, choose Bluetooth device on mobile phone to
search function, and proceed to search for BT-020 Bluetooth headset until BT-020 shows on
mobile phone.
c. Select Bluetooth device

d. Input ID code 0000, and confirm, then mobile phone pairing with BT-020 Bluetooth
headset.
e. After successful pairing, Blue and red indicator flash alternately changes to blue light
flashes. Then the whole pairing process is over automatically.
Power-saving mode
a. When BT-020 Bluetooth headset fail in the process of pairing, after about 60sec, enter the
standby state automatically, after more 5 sec, BT-020 will power off automatically.
b. When BT-020 Bluetooth headset disconnect with any Bluetooth device in the state of
power on, it will close automatically after 5 minute.
Receiving an incoming call
When BT-020 Bluetooth headset is power on and connects with mobile phone, telephone in.
a. Short press MFB.
b. Then blue indicator changes from slow flash to quick flash.
c. If BT-020 Bluetooth headset has no power on, please open it firstly. After redialing mobile
phone automatically (press one time to connect with mobile phone), press MFB again, then
you can receive the incoming call.
Voice dialing
When BT-020 Bluetooth headset is power on and connects with mobile phone, you want to
voice dialing.
a. Short press MFB, you can hear short BEEP sound, then enter voice dialing.
b. Speak the people’ name saved in telephone book of mobile phone, such as David.
c. Mobile phone will dial according to the number in telephone book of mobile phone.
The function demands Bluetooth mobile phone to have voice recognition function.
Rejecting an incoming call
When BT-020 Bluetooth headset is power on and connects with mobile phone, telephone in
but not to receive, long press VOL+, then the incoming call is rejected.
De electrifying Number dialing
In the standby state, long press volume +.
Volume adjustment
In the state of standby, speaking and calling etc, short pressing volume + or volume -, you can
adjust volume. Short press volume + one time, the volume adds one step; Short press volume
-, the volume decreases one step. When volume is adjusted to maximum or minimum, it will
sound a warning.
Low battery warning
When the battery of BT-020 Bluetooth headset is not enough, blue light closes, red light
flashes, and speaker send short BEEP sound.
Then you should charge BT-020 Bluetooth headset.
Rebind automatically
When BT-020 Bluetooth headset is power on and disconnects with devices, also in effective
distance with mobile phone, if mobile phone connects and pairs with BT-020, it will rebuild
connection with mobile phone automatically.
Charging
Plug DC head of power adapter into charging interface of charging socket, then place BR-020
Bluetooth headset into charging socket, close the upper cover of charging socket, and then

plug in power supply of power adapter, red light flashes, which means charging begin; red
light goes out, which means charging end.
End speaking
In the process of speaking, short press MFB, it can end speaking.
Performance parameter
Item Parameter
Standard Bluetooth V2.0+EDR
Effective range 10m without obstacle
Audio frequency 15bits S/N 70db
Frequency 2.4GHZ-2.48GHZ ISM Band
Connection Point-to-Point
Antenna Gain 2dBi
Type of antenna joint Printed Antenna
Speaking time 4-5hrs
Standby time after pairing About 70hrs
Standby time while power on and non-pairing
Close automatically after 10 minute
RF output Power 0dBm (class Ⅱ)
Power consumption of power supply 18~25mA when speaking
Battery capacity Rechargeable Lithium Polymer Battery
70mAh
Charging 5V DC, AC adapter input/100-240V
Charging time 2~3hrs
Using temperature 0 ℃ to +60℃
Storage temperature -20℃to +85℃
Pairing code 0000
Pairing One-to-one, allow many primary device but
need to connect by turns
Operation voltage 3.0~4.2V
Receiving sensitivity -70dBm
Standard allocation Headset main body, headset, charging
socket, charger(5V+0.2), specification
Important information
Product maintenance
a. Please keep the product dry, and use clean soft cloth to clean Bluetooth headset surface.
b. Please don’t keep Bluetooth headset in the place having many dusts, high temperature or
extremely low temperature.
c. Please don’t take down Bluetooth headset by yourself. The unprofessional disposal will
lead to its damage.
d. Please make wild operation for Bluetooth headset, such as beating and knocking etc.
e. Please don’t make charging port of Bluetooth headset short circuit, which leads to battery

damage.
f. Please use original binding fitting, using other fittings at random cause any accident will is
not within the guarantee range.
Trouble clearing
Phenomenon Reason Solving method
Can not power on Low battery Charging up headset 2 -3 hrs
No voice after pairing Incorrective pairing Pairing again
Can speaking but red light
flashes Low battery, red light flashes Charging up headset immediately
Charging without indication
AC adapter without voltage
output Check AC adapter if plug or the switch of power supply if
open.
Headset close
automatically Low battery Charging up headset 2 -3 hrs
Headset has echo. Too loud volume or noisy
environment Change a place or adjust volume
Speaking has noise. The environment interference
cause headset is far from
device.
Change a place or pull
headset and device closer.
The other side is in a low
voice. The pairing of headset is not correct. Adjust the position of headset
Storage environment
a. Working temperature environment: 0℃ to 60℃without loss of function
b. Storage temperature require: -20℃to 60℃without any damage to the Kit’s contents
c. Humidity range: 30﹪-90﹪humidity @ 60℃without loss of function
.

EXPOSURE TO RADIO FREQUENCY ENERGY
This device and its antenna must not be co-located or operated in conjunction with
any other antenna or transmitter. To comply with FCC RF exposure requirements,
only use supplied antenna.