USAMS FM Transmitter Car Bluetooth 5.0 FM Radio Modulator Car Kit 5V USB Car Charger Handsfree Wireless Aux Audio MP3 Player Kit

Specification

Brand: USAMS

Model: US-SJ503

Name: Car Digital Display FM Wireless Audio Receiver

Colour: Black

Material: ABS+TPE

Size: 74*23.5*14.1mm (not includes cable)

Cable Length: 1m

Weight: About 29.6g

Input: DC 5V

BT Version: 5.0

BT Connection Distance: ≤10m

FM Transmission Frequency: 87.5-108.0MHz

FM Transmission Distance:<3m

Product Structure

LED screen  Indicator  Prev song/ Volume -   Multi-function button   Next song/ Volume +

MIC    Spring charging cable  3.5mm（AUX）audio jack  TF card slot  Glue tape   

USB charging connector

With double-side tape,the product can be stuck to a position for driver convenient use.

Notes: Pictures for reference only, product please in kind prevail.

Including: Product*1/Double side glue tape*1/1m audio cable*1/User Manual*1

How to Use

(1) Connect to power supply

Insert the USB charging connector into the USB port of car/car charger/laptop

* As the working current required for the product is too small, it is not recommended to use a power bank to charge for the product,otherwise may result in its current being cut-off.

(2)Connect audio output devices

① Connect to car audio via FM

Adjust the car audio to a blank frequency (no local radio channel);

Long press the multi-function button for 2 seconds, the number on LED flashes, adjust the FM value of the product to make it consistent with the car audio.

② Connect to car audio via3.5mm audio cable

Insert the 3.5mm audio jack into car 3.5mm audio port

*It can also be plugged into an old-typed non-Bluetooth speaker with a 3.5mm audio port.

（3）Connect audio input devices

① BT mode:Turn on phone/ tablet’s Bluetooth,search “USAMS-SJ503” and click to connect, after first connection, it will auto connect to the recently paired device.

②TF Card Mode: Insert TF card with audio files

lSupport TF card capacity: ≤128G

lSupport TF Card System Format: FAT16/FAT32/FAT64/exFAT

lSupport TF Card Audio Formats: MP3/WAV/FLAC/WMA

（4）Connected successfully, ready to use

Connect two phones at the same time

①Connection method:

Connect to the first phone’s Bluetooth, and then turn off the phone's Bluetooth;

Connect to the second’s Bluetooth;

Turn onthe first phone’s Bluetoothand connecttothe product again.

② Usage:

When two phones are connected at the same time, if play audio of phone A, it will auto pause the audio of phone B.

When playing audio of phone A, if phone B has a call coming, it will switch to call reminder of phone B, after hanging up call, it will switch to phone A play mode.

Button Operation Instructions:

Answer/Hang up call: Press multi-function button once

Reject call: Press and hold multi-function button for 2s

Last number redial: Press multi-function button 3 times

Hands-free switch: during a call, press and hold the multi-function button for 2s to switch between the phone's private answering/loudspeaker voice.

Switch of BT/TF card mode: Press multi-function button 2 times

Play/Pause: Press multi-function button once

FM value adjustment: long press multi-function button for 2s, the number on LED flashes; short press Next Song Button to decrease by 0.1MHz, long press to decrease continuously; short press Prev Song Button to increase by 0.1MHz, long press to increase continuously. After adjustment, it will auto enter the set frequency point without pressing the button to confirm.

Prev song/ Volume - : Short press to previous song, long press to reduce volume

Next song/ Volume +: Short press to next song, long press to add volume

Notes:

lAfter power on, the product is in Bluetooth mode by default; when switching to TF card mode, you need to wait a moment for TF card file recognition before playing.

lIf there is an incoming call when in TF card playing mode, the product will directly switch to Bluetooth mode and ringtone rings, after hanging up the call, it will switch back to TF card play mode.

Attention (typical situations)

①　Do not allow children to unplug and play with the product and charging cable.

②　The input voltage of the product is DC5V; it will cause product abnormalities and damage if using product beyond the specified voltage range.

③　If unused for a long time, please unplug the product.

④　Do not use the product with high-voltage lines and in areas with strong magnetic fields.

⑤　Do not scratch product surface with sharp objects,and prevent it from impact.

⑥　Keep it away from water or other liquids.

⑦　Do not disassemble this product by yourself.