- Three package options for different group sizes
- Suitable for church interpretation, worship, sermons, and group listening
- Clear wireless FM audio for voice communication
- Rechargeable PR13S receivers with simple operation
- Charging case for easier storage and charging
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Description
Retekess TR503S + PR13S Wireless FM Translation System is designed for clear group listening and wireless voice delivery in a variety of settings, including meetings, training, teaching, factory visits, guided tours, and church services. It is suitable for both daily communication needs and organized multi-person listening scenarios.
Built around the TR503S transmitter and PR13S rechargeable receivers, this system combines long battery life, stable wireless transmission, and easy daily management for different team sizes and use environments.
Suitable for Multiple Group Listening Scenarios
Ideal for meetings, training, teaching, factory visits, church interpretation, sermon listening, and guided tour communication where clear audio matters.
Clear Voice Transmission
Delivers stable FM audio for speech, interpretation, and announcements, helping improve listening clarity in shared indoor or on-site environments.
Up to 60m Wireless Audio Transmission
Supports long-range wireless listening, helping users hear more clearly across classrooms, meeting rooms, worship spaces, and guided activity areas.
Up to 20 Hours Runtime
The rechargeable design supports long working time for training sessions, tours, teaching activities, services, and other extended events.
Simple Setup and Practical Functions
Auto scan helps users get started quickly, while Bluetooth audio input, lock function, and channel memory support smoother everyday operation.
Flexible Package Options
Compact receivers are easy to distribute and manage, and the 30-receiver package includes a charging case for more efficient storage and charging.
This system is suitable for wireless meetings, teaching and training, factory visits, guided tours, church interpretation, sermon listening, and other group communication scenarios that require clear and stable audio delivery.
If the current package options do not match your needs, feel free to contact us for a custom quantity solution.
| 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.
Why Choose RETEKESS FM Radio System
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 and wireless voice delivery in a variety of settings, including meetings, training, teaching, factory visits, guided tours, and church services. It is suitable for both daily communication needs and organized multi-person listening scenarios.
Built around the TR503S transmitter and PR13S rechargeable receivers, this system combines long battery life, stable wireless transmission, and easy daily management for different team sizes and use environments.
Suitable for Multiple Group Listening Scenarios
Ideal for meetings, training, teaching, factory visits, church interpretation, sermon listening, and guided tour communication where clear audio matters.
Clear Voice Transmission
Delivers stable FM audio for speech, interpretation, and announcements, helping improve listening clarity in shared indoor or on-site environments.
Up to 60m Wireless Audio Transmission
Supports long-range wireless listening, helping users hear more clearly across classrooms, meeting rooms, worship spaces, and guided activity areas.
Up to 20 Hours Runtime
The rechargeable design supports long working time for training sessions, tours, teaching activities, services, and other extended events.
Simple Setup and Practical Functions
Auto scan helps users get started quickly, while Bluetooth audio input, lock function, and channel memory support smoother everyday operation.
Flexible Package Options
Compact receivers are easy to distribute and manage, and the 30-receiver package includes a charging case for more efficient storage and charging.
This system is suitable for wireless meetings, teaching and training, factory visits, guided tours, church interpretation, sermon listening, and other group communication scenarios that require clear and stable audio delivery.
If the current package options do not match your needs, feel free to contact us for a custom quantity solution.
| 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.
Why Choose RETEKESS FM Radio System
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.
Spec
| 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 |
FAQ
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.
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