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FM-transmitter 
Defender RT-Feet

Operation Manual

FM-transmitter
Defender RT-Feet

Thank you for purchasing Defender FM-transmitter. 
Please, read this manual carefully, before use.

Package contents

 

٠ FM-transmitter ٠ Remote control unit ٠ Spare protective unit ٠ Operation manual ٠ Аudio cable

How to use

1. 

Start the car engine 

2. 

Connect the FM-transmitter to car cigarette lighter. 

 

The device will be on automatically.

3. 

Turn the fm radio and tune it to the frequency, without radio broadcasting.  

 

To tune the transmitter use the remote control unit or controls on the transmitter.

4. 

Connect USB flash drive or SD card. 

 

Search and then playback of MP3 or WMA files will start automatically.

5. 

Use the remote control unit to choose the audio track, to adjust volume 

 

or for the other settings.

EN

CH-

Tune to the previous frequency

(with increments of 0.1MHz)

CH+

Tune to the next frequency (with increments of 0.1MHz)
Previous audio track
Next audio track
Play / pause

VOL-

Volume down

VOL+

Volume up

EQ

Equalizer

F-

Previous folder

F+

Next folder

1~9

Track number: press within 3 seconds 

 

audio track number.

 

Frequency number: choose the frequiency number and 

press CH-  or  CH+ to confirm.

Controls on FM-transmitter

1. 

Press “     /     ” for previous or next track. Long 

pressing of these buttons allows to set volume up 

or down.

2. 

“CH”: Press “CH”. Then “     /     ” to choose 

frequency. Then press “CH” for confirmation.

3. 

Press “     ” for play/pause. Long pressing of this 

button allows to choose cycle playback.

ALL

 — play all audio tracks one by one 

ONE 

— cycle recording of one track 

RND

 — shuffle recording

FOL 

— cycle recording of all tracks in the current folder

Troubleshooting

Specification

Problem

Solution

Cannot turn on the transmitter

1. 

Check the protection unit. If it does not work 

properly replace it with the new one.

2. 

Check if the car cigarette lighter 

 

works properly.

The transmitter is on, but the signal 

playback does not work

Check if the frequency settings on transmitter 

 

are the same with the settings of the radio.

Radio noise

1. 

Choose the other frequency. 

2. 

Perhaps the track is damaged, 

 

switch to the other track. 

3. 

Try to set the volume down.

Screen

LCD 

Power supply

DC12V

Supported audio format

MP3, WMA

Operating currency

<120mA

Bit rate

8K bps- 320K bps

Frequency range

87.6-107.9 MHz

Operating tempreature

- 5

0

C-40

0

C

Operation distance

<10m

Attention!

- Do not operate the device when driving in order to keep attention to the road 

 

and avoid accidents.
- Do not put the device on uneven surface to avoid its falling down.
- Keep the device away from children under 3 years old.
- When starting the car engine the device must be disconnected from the car cigarette lighter.
- When connecting the transmitter to the other device, read the manual for that other device 

carefully and follow the instructions.
- Conform to the rules of your country for utilization of electronic appliances.

 

Safety precautions

Avoid mechanical damage of the device. Protect the device from impacts and vibration; 

 

do not let it fall, do not shake. Hard pressure on the screen can damage it.
Avoid temperatures above 40°C and  dramatic temperature changes. 

 

Keep away from direct sunlight and away from heat sources. 
Keep the device away from moisture. Do not use the device in the places with high humidity, 

especially in the bathroom.
Keep the device away from dust, do not use it in the dusty places. 
Some parts of the device may contain substances that can damage sensitive surfaces 

 

of the furniture or some plastic surfaces. Avoid direct contact of the device (or its parts) 

 

with the sensitive surfaces. 
Use according to its intended purpose only and in conformity with the present operation 

manual. 
Never connect electric current of higher voltage to the device. 

Technical problems

If some foreign particle or substance entered the device, please, disconnect it from the power 

supply immediately. Consult with the manufacturer or with the Service Center to examine 

 

the device carefully.
For any technical clarifications consult with the Service Center.
Most electrical appliances (such as PCs, smartphones, TVs, etc.) produce magnetic noise. 

 

Do not put the devise or radio near to such appliances to avoid the noise.

Package

Keep the package away from the reach of children.

Cleaning

Use dry soft cloth for cleaning.

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