Retekess TR503S + PR13S Wireless FM Translation System is designed for clear group listening, wireless voice delivery, and real-time interpretation in a variety of settings, including meetings, training, teaching, church services, guided tours, and other shared listening environments. It helps reduce listening difficulties caused by distance, background noise, and shared seating, giving speakers and organizers a simpler way to deliver clear audio to every participant.
In large rooms or group settings, people at the back often struggle to hear clearly. This system helps solve that problem with stable wireless coverage, clear FM audio, and no-delay listening, so every participant can follow the message more easily.
Long events can be stressful when battery life is uncertain. With up to 30 hours of use, this system helps reduce charging worries and keeps audio support ready for extended activities, so users can stay focused on the message instead of checking power again and again.
Background noise, distance, and room acoustics can make spoken content harder to deliver. With a built-in high-sensitivity microphone and stable voice transmission, this system helps your message come through more clearly and naturally.
Sometimes voice alone is not enough. With wireless audio connection, this system lets you add music or other sound sources to make presentations, worship, and speaking moments more engaging.
Different events call for different listening modes. With mono and stereo options, this system makes it easier to match the way audio is delivered, whether the focus is speech, music, or shared group listening.
Setup should not slow down your event. With one-touch auto scan and same-frequency matching, this system helps users find the right channel quickly and start listening with less hassle.
Repeated setup takes time, especially when the same channels are used again and again. The channel memory function lets you save frequently used settings for faster access and simpler daily operation.
Bulky equipment can feel inconvenient during longer sessions. With a lightweight and portable design, this system is easier to carry, distribute, and use throughout the day, helping reduce wearing fatigue.
Accidental button presses can interrupt listening and create unnecessary confusion. The smart lock function helps keep key settings in place during use, so users can avoid unwanted changes while still adjusting volume when needed.
From teaching and host presentations to worship services, multilingual gatherings, and small group study, this system helps people hear more clearly and stay focused on the message. It supports smoother communication in shared listening environments and gives organizers a simple, flexible way to deliver audio to every participant.
| Package | Configuration | Package Contents |
|---|---|---|
| 10-Person Set | 1 Transmitter + 10 Receivers | TR503S Transmitter ×1, PR13S Receiver ×10, Type-C Cable ×11, 3.5mm Earphone ×10, Lanyard ×10, User Manual ×1 |
| 15-Person Set | 1 Transmitter + 15 Receivers | TR503S Transmitter ×1, PR13S Receiver ×15, Type-C Cable ×16, 3.5mm Earphone ×15, Lanyard ×15, User Manual ×1 |
| 30-Person Set | 1 Transmitter + 30 Receivers + Charging Case | TR503S Transmitter ×1, PR13S Receiver ×30, Type-C Cable ×31, 3.5mm Earphone ×30, Lanyard ×30, User Manual ×1, Charging Case ×1 |
Note: Please check the selected package option before placing your order.
Clear Audio
Easy Operation
Flexible Packages
Retekess provides practical wireless audio solutions for meetings, teaching, interpretation, tours, and other group communication needs. This system is designed to support clearer voice delivery, simpler setup, and more convenient receiver management in daily use.
Retekess TR503S + PR13S Wireless FM Translation System is designed for clear group listening, wireless voice delivery, and real-time interpretation in a variety of settings, including meetings, training, teaching, church services, guided tours, and other shared listening environments. It helps reduce listening difficulties caused by distance, background noise, and shared seating, giving speakers and organizers a simpler way to deliver clear audio to every participant.
In large rooms or group settings, people at the back often struggle to hear clearly. This system helps solve that problem with stable wireless coverage, clear FM audio, and no-delay listening, so every participant can follow the message more easily.
Long events can be stressful when battery life is uncertain. With up to 30 hours of use, this system helps reduce charging worries and keeps audio support ready for extended activities, so users can stay focused on the message instead of checking power again and again.
Background noise, distance, and room acoustics can make spoken content harder to deliver. With a built-in high-sensitivity microphone and stable voice transmission, this system helps your message come through more clearly and naturally.
Sometimes voice alone is not enough. With wireless audio connection, this system lets you add music or other sound sources to make presentations, worship, and speaking moments more engaging.
Different events call for different listening modes. With mono and stereo options, this system makes it easier to match the way audio is delivered, whether the focus is speech, music, or shared group listening.
Setup should not slow down your event. With one-touch auto scan and same-frequency matching, this system helps users find the right channel quickly and start listening with less hassle.
Repeated setup takes time, especially when the same channels are used again and again. The channel memory function lets you save frequently used settings for faster access and simpler daily operation.
Bulky equipment can feel inconvenient during longer sessions. With a lightweight and portable design, this system is easier to carry, distribute, and use throughout the day, helping reduce wearing fatigue.
Accidental button presses can interrupt listening and create unnecessary confusion. The smart lock function helps keep key settings in place during use, so users can avoid unwanted changes while still adjusting volume when needed.
From teaching and host presentations to worship services, multilingual gatherings, and small group study, this system helps people hear more clearly and stay focused on the message. It supports smoother communication in shared listening environments and gives organizers a simple, flexible way to deliver audio to every participant.
| Package | Configuration | Package Contents |
|---|---|---|
| 10-Person Set | 1 Transmitter + 10 Receivers | TR503S Transmitter ×1, PR13S Receiver ×10, Type-C Cable ×11, 3.5mm Earphone ×10, Lanyard ×10, User Manual ×1 |
| 15-Person Set | 1 Transmitter + 15 Receivers | TR503S Transmitter ×1, PR13S Receiver ×15, Type-C Cable ×16, 3.5mm Earphone ×15, Lanyard ×15, User Manual ×1 |
| 30-Person Set | 1 Transmitter + 30 Receivers + Charging Case | TR503S Transmitter ×1, PR13S Receiver ×30, Type-C Cable ×31, 3.5mm Earphone ×30, Lanyard ×30, User Manual ×1, Charging Case ×1 |
Note: Please check the selected package option before placing your order.
Clear Audio
Easy Operation
Flexible Packages
Retekess provides practical wireless audio solutions for meetings, teaching, interpretation, tours, and other group communication needs. This system is designed to support clearer voice delivery, simpler setup, and more convenient receiver management in daily use.
| TR503S | PR13S | ||
|---|---|---|---|
| Dimensions | N/A | Dimensions | 93.5 × 53 × 15 mm |
| Weight | 101 g | Weight | 40 g |
| Operating Frequency | 87–108 MHz | Operating Frequency | 88–108 MHz |
| Signal-to-Noise Ratio | 60 dB | Receiving Sensitivity | 2 dB |
| Operating Distance | 30 m | Operating Current | 32 mA |
| Battery | Built-in Li-ion battery, 3.8 V, 200 mAh, 0.76 Wh | Battery | Built-in Li-ion battery, 3.7 V, 1000 mAh, 3.7 Wh |
| Standby Time | 2 h | Battery Life | 30 h |
| Charging Time | 2 h | Charging Time | 4 h |
| Bluetooth Version | 5.3 | Charging Port | Type-C |
| Charging Port | Type-C | / | / |
| Channel Frequencies | CH01 72.1 MHz, CH02 72.3 MHz, CH03 72.6 MHz, CH04 72.8 MHz, CH05 74.7 MHz, CH06 75.4 MHz, CH07 75.7 MHz, CH08 75.9 MHz, CH09 72.5 MHz, CH10 72.2 MHz, CH11 72.4 MHz, CH12 72.7 MHz, CH13 72.9 MHz, CH14 75.3 MHz, CH15 75.6 MHz, CH16 75.8 MHz, CH17 75.5 MHz | ||
| TR503S | |
|---|---|
| Dimensions | N/A |
| Weight | 101 g |
| Operating Frequency | 87–108 MHz |
| Signal-to-Noise Ratio | 60 dB |
| Operating Distance | 30 m |
| Battery | Built-in Li-ion battery, 3.8 V, 200 mAh, 0.76 Wh |
| Standby Time | 2 h |
| Charging Time | 2 h |
| Bluetooth Version | 5.3 |
| Charging Port | Type-C |
| PR13S | |
|---|---|
| Dimensions | 93.5 × 53 × 15 mm |
| Weight | 40 g |
| Operating Frequency | 88–108 MHz |
| Receiving Sensitivity | 2 dB |
| Operating Current | 32 mA |
| Battery | Built-in Li-ion battery, 3.7 V, 1000 mAh, 3.7 Wh |
| Battery Life | 30 h |
| Charging Time | 4 h |
| Charging Port | Type-C |
| Channel Frequencies | CH01 72.1 MHz, CH02 72.3 MHz, CH03 72.6 MHz, CH04 72.8 MHz, CH05 74.7 MHz, CH06 75.4 MHz, CH07 75.7 MHz, CH08 75.9 MHz, CH09 72.5 MHz, CH10 72.2 MHz, CH11 72.4 MHz, CH12 72.7 MHz, CH13 72.9 MHz, CH14 75.3 MHz, CH15 75.6 MHz, CH16 75.8 MHz, CH17 75.5 MHz |
Q: How should I maintain the battery if the device is not used for a long time?
A: If the device will not be used for an extended period, it is recommended to charge it at least once every three months to help protect battery life.
Q: Will the system produce feedback if the microphone and receiver are too close?
A: This depends on the distance between the devices, the volume level, and the microphone sensitivity. It is recommended to keep the microphone and receiver at least 2 meters apart, or adjust the volume properly for normal use.
Q: Why can the microphone not connect to the receiver?
A: Please check whether both the microphone and the receiver are powered on, whether they are working on the same frequency, and whether the battery level is sufficient.
Q: Why is there noise or radio interference while the player is working?
A: Please check whether the working frequency conflicts with the local radio frequency. It is recommended to use a locally unoccupied frequency whenever possible. We recommend using 106.4 MHz, but the receiver itself may still have a certain level of background noise.
Q: Why does the system work better outdoors than indoors?
A: Please extend the antenna whether you are using it indoors or outdoors. Outdoor performance is usually better because there are fewer obstacles and less external interference.
Q: Why is there no sound after pairing successfully?
A: Please check whether both the microphone and the receiver are powered on.
Q: What should I do if the sound is distorted?
A: Please check whether the microphone and the receiver are working on the same frequency. If the frequencies do not match, sound distortion may occur.
RETEKESS serves over 150K businesses with wireless communication.
Google
Amazon