1. Introduction
Thank you for choosing the LEKATO MS-02 Wireless In-Ear Monitor System. This system is designed to provide musicians and performers with a reliable, low-latency, and high-fidelity audio monitoring solution. Utilizing 2.4G stereo wireless transmission, the MS-02 offers clear and pure sound for various applications, including live performances, studio monitoring, and practice sessions. This manual will guide you through the setup, operation, and maintenance of your device.
2. Safety Information
- Do not expose the device to excessive heat or moisture.
- Keep batteries out of reach of children.
- This device may interfere with other wireless equipment.
- Dispose of batteries according to local regulations.
3. Package Contents
Please check the package to ensure all items are present:
- Wireless Transmitter (MS-02) x 1
- Wireless Receiver (MS-02) x 1
- Dual Type-C Charging Cable x 1
- 3.5mm Audio Cable x 2
- 3.5mm to 6.35mm Adapter x 1
- User Manual x 1

4. Product Overview
The LEKATO MS-02 system consists of a transmitter and a receiver, both designed for ease of use and portability. Key features include ultra-low latency, high-quality audio transmission, and a compact clip-on design.
4.1 Transmitter and Receiver Controls

- STEREO/MONO Switch: Long press to toggle between Mono and Stereo input modes.
- Power Button: Press and hold to power on/off.
- PAIR Button: Used for pairing the transmitter with receivers.
- MUTE Button: Press to mute the audio output.
- Volume +/- Buttons (on Receiver): Adjust the output volume.
- LED Indicators: Display battery level and current status.
4.2 Dimensions and Specifications

5. Setup
5.1 Charging the Devices
Before first use, fully charge both the transmitter and receiver using the provided Dual Type-C charging cable. The LED indicators will show charging status and battery level.

5.2 Pairing the Transmitter and Receiver
The system supports one transmitter connecting to multiple receivers (up to 4 pairs). Follow these steps for pairing:
- Power on the transmitter.
- Power on the first receiver.
- Simultaneously long-press the PAIR buttons on both the transmitter and the first receiver. The lights will flash, indicating pairing mode.
- Once successfully paired, the lights on both the transmitter and receiver will glow steadily.
- To connect additional receivers, repeat steps 2-4 for each additional receiver.

5.3 Connecting to Audio Source
Connect the transmitter to your audio source (e.g., mixer, computer, smartphone) using the appropriate audio cable and adapter. The transmitter features a 3.5mm input jack.
6. Operating Instructions
6.1 Power On/Off
Press and hold the power button on both the transmitter and receiver to turn them on or off.
6.2 Mono/Stereo Mode Selection
Long-press the STEREO/MONO switch on the transmitter to toggle between Mono and Stereo input modes. Ensure the transmitter and receiver are on the same channel for proper pairing and operation.

6.3 Volume Adjustment
Use the Volume +/- buttons on the receiver to adjust the output volume to your desired level. The receiver features 5 levels of volume adjustment.
6.4 Mute Function
Press the MUTE button on the transmitter to instantly mute the audio output. Press it again to unmute.

7. Maintenance
- Keep the devices clean by wiping them with a soft, dry cloth.
- Avoid exposing the devices to extreme temperatures or direct sunlight.
- Store the devices in a cool, dry place when not in use.
- Regularly charge the devices to maintain battery health, even if not used frequently.
8. Troubleshooting
8.1 No Sound Output
- Ensure both the transmitter and receiver are powered on and fully charged.
- Verify that the transmitter and receiver are successfully paired (steady indicator lights).
- Check all cable connections between the audio source and the transmitter, and between the receiver and your headphones/IEMs.
- Adjust the volume on the receiver.
- Ensure the mute function is not activated on the transmitter.
- Confirm the audio source is sending a signal.
8.2 Intermittent Audio or Interference
- Move the transmitter and receiver closer to each other to reduce the distance. The effective range is approximately 100 feet (open area).
- Avoid placing the devices near other 2.4GHz wireless equipment (e.g., Wi-Fi routers, other wireless microphones) that might cause interference.
- Ensure there are no large metal objects or thick walls obstructing the line of sight between the transmitter and receiver.
- Check for low battery on either device.
8.3 Pairing Failure
- Ensure both devices are fully charged before attempting to pair.
- Make sure you are pressing the PAIR buttons simultaneously and holding them long enough.
- Power cycle both devices and try the pairing process again.
9. Specifications
| Feature | Specification |
|---|---|
| Brand | LEKATO |
| Model Number | MS-02 |
| Wireless Type | 2.4GHz Wireless Frequency |
| Frequency Range | 20-20KHz |
| Sampling Rate | 24bit/48KHz |
| Mono Latency | <4.5ms |
| Stereo Latency | <10.8ms |
| Effective Distance | 100 feet (open area) / 30 meters |
| Battery Life | 6-8 hours (approx.) |
| Connectivity | Wireless |
| Compatible Devices | Audio interfaces, computers, smartphones, mixers |
| Control Method | Button Control, Touch |
| Weight | 0.07 kg |
10. Warranty and Support
LEKATO products are designed for reliability and performance. For warranty information or technical support, please refer to the official LEKATO website or contact your local distributor. Keep your purchase receipt as proof of purchase for any warranty claims.

