Retekess Anniversary Celebration 2022

Retekess TR504 Portable FM Transmitter Broadcast Tour Guide System

SKU: F9212B

Regular price $59.99~$99.99

TR504 portable FM transmitter Long-range and easy to use

Support TF card, 3.5mm AUX input 

FM Transmitter with good touch feelings

This FM transmitter Rubber material, comfortable texture

Upgrade version sound processor

Professional CPU processor and Gold-plated AUX in jack interface make sure good sound quality output support better sound quality

Stable Transmit power 

Upgrade version have Solved the issue that the launch of power due to the battery voltage dropped the issue, which caused the phenomenon of

transmitting power consistently, so as to ensure the stability of the transmit coverage

The Broadcast Distance

Support 4 levels(0.01W, 0.05W, 0.2W, 0.6W) of power output,The maximum transmission distance of 300 meters

Support transmit lossless music through the memory card and AUX input jack

3.5mm AUX input: transmit music from your smartphone, computer, MP3, or CD player

Portable FM radio transmitter 

Key Features.png

Long battery life

The FM radio transmitter is equipped with a built-in 1500mAh polymer lithium battery and supplied with high performance; The USB cable with the bold

copper core support faster-charging speed

The low power FM transmitter

0.01W 0.05W 0.2W 0.6W etc The Power output is 4 levels adjustable; It reaches The maximum transmission distance of 300 meters in the open area.

80-100M in normal use

Anti-whistle effect

Portable FM transmitter equipment with Professional CPU processor support better sound quality control; Using high-precision clock vibration crystal

guarantee the output of high-fidelity sound quality

FM transmitter key features

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You can transmit across the entire public FM band;1 transmitter can pair up to Countless FM

receivers. If you have more than one Tour guide or Simultaneous interpreting area you would like to add, just DIY and fulfill your needs

Support memory card(8GB card included)

Support TF card and AUX line-in to play music with the 3.5mm male to male Aux cable, it can even play music, it’s the package included the 8GB card,

so you can download the music to the card, Support memory card Max 32GB

Where can we use the FM transmitter

Meeting: workshop meeting, office meeting; Factory business: office, production workshop background, event music, temporary meeting


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Frequency increase 0.1MHz
Frequency stability ±10PPM
Output impedance 50Ω
SNR ≥70dB
RF output power 0mW-600mW
Support mp3 format FLAC, WAV, PCM, WMA, MP3
Support memory card Max 32GB
Power Built-in 1500mAh polymer lithium battery
Working hours 8-10 hours
Charge DC 5V 1A, Micro USB jack
Size 3.9 x 2.2 x 0.6 in
Weight 0.17lb

Package Includes:
1 x FM transmitter
1 x Antenna
1 x USB charging cable
1 x Wired microphone
1 x Hand strip
1 x User manual

  • Rubber material; comfortable texture; The portable FM transmitter support transmit music through the memory card and AUX input jack; Suitable for application areas such as car music transmit; international tourism

  • Transmit frequency adjustable; you can store five commonly used transmission frequencies; Support 4 levels (0.01W;0.05W;0.2W; 0.6W)of power output; the maximum transmission distance of 300 meters in the open air

  • 3.5mm AUX input; you can transmit music from your smartphone; computer; MP3 or CD player via Aux-in cable

  • Support TF card player; and supports three lossless music formats FLAC; PCM; WAV; to achieve the lossless high-quality sound of the broadcast

  • Easy to control; you just need to long-press the MIC button to speak; release to end; support external condenser microphone; with professional KTV microphone reverb; delay effect, and has a good anti-whistle effect

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