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f. Please use original binding fitting, it is not within the guarantee range when any accident caused by 
using other fittings at random. 
4.2 Trouble clearing 
Phenomenon  

Reason  

Solving method 

Can not power on   

Low battery 

Charging headset 2 -3 hrs   

No voice after pairing 

In corrective pairing 

Pairing again 

Can speaking but red light 
flashes 

Low battery, red light flashes  Charging headset immediately 

Charging without indication   

AC  adapter  without  voltage 
output 

Check AC adapter whether plug or 
not, or the switch of power supply 
whether open or not. 

Headset close automatically 

Low battery   

Charging up headset 2 -3 hrs 

Headset has echo. 

Too loud volume or it is in 
noisy environment 

Adjust volume or change a place   

Speaking has noise. 

The 

environment 

interference or the headset is 
far from device. 

Change a place or make 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’s range: 

0℃

 to 60

℃ 

without loss of function 

b. Storage temperature requires: -20

 to 60

without any damage to the Kit’s contents 

c.

 

Humidity range: 3

0﹪

-90

humidity @ 60

  without loss of function 

Caution

:  

The user is cautioned that changes and modifications made to the equipment without the approval of 

manufacturer could void the user’s authority to operate this equipment. 

Notes: 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. 

FCC Warning: 

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.

 

Summary of Contents for OT-020C

Page 1: ...ume realize increasing volume mute rejecting incoming call redialing etc C Volume realize decreasing volume etc 2 2 Power on In the state of power off long press MFB speaker will make a short BEEP sound Blue light flashes Then OT 020C will power on 2 3 Power off In the standby state long press MFB speaker will make a long BEEP sound Blue light closes Then OT 020C will power off 2 4 Pairing Firstly...

Page 2: ...function demands Bluetooth mobile phone have voice recognition function 2 8 Rejecting an incoming call When OT 020C Bluetooth headset is power on and connects with mobile phone telephone in but don t want to receive long press VOL then the incoming call is rejected Last number redialing In the standby state long press volume 2 9 Volume adjustment In the state of standby speaking and calling waitin...

Page 3: ...after 10 minutes RF 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...

Page 4: ...he equipment without the approval of manufacturer could void the user s authority to operate this equipment Notes 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 c...

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