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GREAT BRITAIN • customer service  tel: 020 8247 9300   e-mail: [email protected]  internet: www.clasohlson.co.uk

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Ver

. 20150330

NFC Bluetooth Car Receiver 

Art.no  38-6818 

Model  BTC023H

Please read the entire instruction manual before using the product and then 
save it for future reference. We reserve the right for any errors in text or 
images and any necessary changes made to technical data. In the event of 
technical problems or other queries, please contact our Customer Services.

Safety

•  Never subject the product to high temperature, dust, heavy vibration, 

impacts, humidity or moisture.

•  Avoid leaving the product in direct sunlight for long periods.
•  Protect your hearing. Listening on high volume for prolonged periods 

can lead to permanent hearing loss.

•  Never attempt to dismantle the product, it contains no user-serviceable parts.

Things to consider:

•  Other wireless equipment using the same frequency band can reduce 

the transmission range.

•  The range of all wireless equipment depends on the type of obstacles 

located between the transmitter and the receiver (e.g. a concrete wall 
will interfere with the signal more than a plasterboard wall).

If you experience problems, try the following:

•  Turn off any other existing wireless equipment to check whether this is 

the cause of the problem.

•  Reposition the wireless equipment, shorten the distance between 

the transmitter and the receiver or reduce the number of obstacles 
(walls, furniture, etc.) between them.

Buttons and functions

Operating instructions

Handy hint

If the volume of the audio sent to the receiver from a Bluetooth device is 
low, the sound from the car stereo may crackle or be distorted. If you raise 
the volume on the Bluetooth device connected to the receiver, you will get 
a stronger signal in the receiver and better quality sound from the car stereo. 
For the best sound quality, do as follows:

Turn down the volume on the car stereo completely. Raise the volume on 
your Bluetooth device to max. Adjust the volume using the controls on 
the car stereo.

Bluetooth connection

The receiver automatically wakes from standby when connected to a 12 V 
power source. The LED indicator flashes blue in regular 2-second intervals.
1.  Hold down [

 

 ] until the LED indicator flashes red/blue. This indicates 

that the receiver is detectable for other Bluetooth devices. If no 
connection/pairing takes place within 2 minutes, the LED indicator 
reverts to flashing slowly and [

 

 ] needs to be held down again to 

make the receiver detectable.

2.  Activate Bluetooth on the device to be paired with the receiver.
3.  The receiver will appear on your device as 

BTC023H

, select it and pair 

it with your device. Refer to the instruction manual of your device for 
further clarification if you are unsure. 

Note:

 If you are prompted to enter a PIN code on your device, you 

should enter 

0000

 (four zeroes). Certain devices may also require you  

to approve the connection. 

4.  When a connection has been established, the LED indicator will produce a 

flashing pattern with two quick blue flashes followed by a 4-second pause.

5.  Start playback on your device. Set the desired volume levels both 

on your device and the car stereo. Other playback settings can be 
controlled from either the external device or the receiver.

•  If you have connected a mobile phone to the car stereo via Bluetooth 

and receive a call whilst you are listening to music, the music will be 
switched off automatically. Once the call has ended, music playback will 
be resumed (if your phone settings enable this).

•  If the latest paired device has been out of range, it will reconnect 

automatically (provided that Bluetooth is activated on the device) once 
it returns back in range of the receiver. The same applies if the receiver 
has been unplugged from the 12 V socket, once plugged in again it 
reconnects to the latest connected device (provided that Bluetooth is 
activated on the device).

Connecting 2 devices at the same time

The receiver must be in standby mode in order for the connection to initiate.
1.  Plug the receiver into the 12 V socket, or unplug from the 12 V socket 

and plug it back in again. The LED indicator flashes blue in regular 
2-second intervals, which indicates that the receiver is in standby mode.

2.  Switch the car stereo on so that you can hear messages from the receiver.
3.  Hold down [

 

 ] and [ 

>

 ] simultaneously until you hear an increasing 

audible signal. The receiver is now set to connect with 2 devices at 
the same time.

4.  Connect the two devices one at a time as instructed in the 

Bluetooth 

connection

 section above.

5.  Play audio from one of the devices, pause the playback of the first 

device and then begin playback on the second device. It is not possible 
to play audio from 2 devices at the same time.

6.  To disable the capability of connecting 2 devices at the same time, put 

the receiver in standby mode again by unplugging the receiver from 
the 12 V socket and then plugging it back in again.

7.  Hold down [

 

 ] and [ 

<

 ]  simultaneously until you hear a decreasing 

audible signal. 

•  If you have had 2 devices connected at the same time and they have 

been out of range, they will reconnect automatically (provided that 
Bluetooth is activated on the devices) once they return back in range  
of the receiver. 

•  The same applies if the receiver has been unplugged from the 12 V socket, 

once plugged in again it reconnects to the latest connected devices 
(provided that Bluetooth is activated on the devices). 

•  The above applies only if the receiver is in the mode where it can 

connect to two devices at the same time. 

Connecting via NFC (Near Field Communication)

Note:

 Connection is only possible if your mobile phone is equipped with NFC.

1.  Activate 

NFC

 on your mobile phone.

2.  With the receiver in standby mode, hold the NFC area of your mobile 

phone against the receiver. The devices will now pair.

Controlling calls with one connected mobile phone

Note:

 Not all mobile phones support all the following functions. Refer to 

the instruction manual of your mobile for further clarification if you are unsure.

Accepting an incoming call.

Press [

 

 ]  once.

Rejecting an incoming call.

Hold down [

 

 ] for 2 seconds.

Ending a call.

Press [

 

 ]  once.

Turn off the microphone during 
an incoming call.

Press [

 

 ] twice in quick succession.

Turn the microphone back on.

Press [

 

 ] twice in quick succession.

Transfer call from receiver to 
the mobile phone.

Hold down [

 

 ] for 2 seconds.

Transfer call from the mobile 
phone to the receiver.

Hold down [

 

 ] for 2 seconds.

Calling the last number dialled.

Press [

 

 ] twice in quick succession.

Voice activation  
(receiver in standby mode).

Hold down [

 

 ] for 2 seconds.

During a call: answer an incoming 
call and end current call.

Press [

 

 ]  once.

During a call: answer an incoming 
call and hold current call.

Press [

 

 ] twice in quick succession.

Switch between two ongoing calls. Press [

 

 ] twice in quick succession.

During a call: end the current call 
and switch to the call on hold.

Press [

 

 ]  once.

Controlling calls with two connected mobile phones

End the call on mobile phone 1 and answer  
incoming call on mobile phone 2.

Press [

 

 ] twice in  

quick succession.

Place the call on mobile phone 1 on hold and 
answer the call on mobile phone 2.

Press [

 

 ]  once.

Switch between calls when a call is on hold.

Press [

 

 ] twice in  

quick succession.

Care and maintenance

Wipe the receiver clean with a dry cloth or vacuum clean it if needed.
Unplug the receiver from the 12 V socket if it is not to be used for a long time.

Troubleshooting guide

The receiver is not working, 
the LED indicator is not 
flashing blue.

•  Is the cigarette lighter plug of the receiver 

properly pushed into the 12 V socket?

•  Check that the 12 V socket is live. Do you 

need to switch the car ignition on?

•  Are all the plugs and cables intact?

No sound from  
the connected device.

•  Is your car stereo switched to AUX mode?
•  Check the volume level on both the car 

stereo and the connected device.

•  Make sure that the Bluetooth connection 

has been properly established.

•  Test the playback from your external 

device before connecting it to the receiver 
to ensure that it works.

•  Try playback using another file. The file 

you are attempting to play may be 
damaged.

Things to consider:

•  Other wireless equipment using 

the same frequency band can reduce 
the transmission range.

•  The range of all wireless equipment 

depends on the type of obstacles located 
between the transmitter and the receiver 
(e.g. a concrete wall will interfere with 
the signal more than a plasterboard wall).

If you experience problems, try the following:

•  Turn off any other existing wireless 

equipment to check whether this is 
the cause of the problem. Reposition 
the wireless equipment, shorten 
the distance between the transmitter  
and the receiver or reduce the number  
of obstacles (walls, furniture, etc.) 
between them.

If none of the above 
works, try resetting 
the device to its default 
factory settings.

•  Hold down [ 

<

 ] and [ 

>

 ] until you hear 

an audible message and the LED 
indicator flashes red/blue twice.

Disposal

This product should be disposed of in accordance with local regulations.  
If you are unsure how to proceed, contact your local council.

Specifications

Bluetooth standard 

4.0 (HSP, HFP, A2DP, AVRCP)

Input power 

12–24 V

Charging output 

5 V DC, 1 A 

Receiver size

 

Ø 40 mm, thickness: 8 mm

1.  [

 

 ] Bluetooth connection, play/pause, call management

2.  [ 

<

 ] Previous track

3.  Plug for a 12 V car power socket
4.  USB port for charging external devices such as mobile phones
5.  LED indicator

 

-

Flashes red/blue:

 the receiver is detectable for other Bluetooth 

devices

 

-

Flashes blue with 2 second interval:

 standby mode

 

-

Repeated flashing pattern with two quick blue flashes followed 
by a 4-second pause: 

Receiver connected to Bluetooth device

6.  [ 

>

 ] Next track

7.  Microphone
8.  3.5 mm plug for connecting to a car stereo AUX-in socket

Assembly

1.  Find a suitable place 

to attach the control 
panel using the included 
self-adhesive pad. Peel 
the backing off the back 
of the pad and stick it 
onto the car.

2.  Fasten the receiver onto 

the pad.

3.  Plug the 3.5 mm plug 

into the AUX-in socket 
of the car.

4.  Switch your car stereo 

to AUX mode.

5.  Plug the cigarette lighter 

plug into the 12 V socket. 
The LED indicator will 
flash slowly.  

Note:

 You may need to 

switch the car ignition 
on to provide power to 
the 12 V socket.

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