LiberLink User Manual
1. Product Features
- Equipped with Bluetooth for stable, interference-free operation anywhere in the world.
- A single transmitter can connect to multiple receivers simultaneously without restrictions.
- Clear, uninterrupted sound quality even at distances up to 100 meters.
- Auto-pairing for quick and easy connection.
- Effortless connection with external devices (smartphones, tablets, etc.) via Bluetooth.
- Operates without interference in the same space thanks to 65,536 unique IDs.
2. Product Components
Receiver
Components: Cradle, Left/Right Unit, USB-C Port, Status Indicator
Transmitter (Handheld)
Components: Microphone, Power Button, Volume +/- Buttons, Mute Button, Status Indicator, USB-C Port
Transmitter (Headset)
Components: USB-C Port, Volume +/- Buttons, Power Button, Status Indicator
3. Package Contents
Receiver Set
- Left and Right Earphones
- Charging Cradle
- USB-C Cable
Handheld Microphone Set (Transmitter)
- Handheld Microphone
- USB-C Cable
- Neck Strap
Headset Microphone Set (Transmitter)
- Headset Microphone
- USB-C Cable
- Lavalier Clip
20-User Full Package
- 1 Handheld Microphone
- 1 Headset Microphone
- Charging Storage Case
- 1 Adapter
- 1 Neck Strap
- 1 USB-C Cable
- 1 Lavalier Clip
- 20 Receivers (with cradles included)
4. Receiver (L-100RX)
How to Use
- Remove the receiver units from the charging cradle.
- Wear the unit in the correct ear according to the L (Left) / R (Right) marking on the device.
- To Increase Volume: Touch and hold the indicated area (1) for more than 1 second.
- To Decrease Volume: Quickly tap the indicated area (1) twice.
How to Charge
Insert the receiver units into the cradle according to the L/R markings to begin charging.
- Receiver Unit Charging: [Status Indicator] Charging: Red light. Fully Charged: Indicator light turns off.
- Cradle Charging: [Status Indicator] Charging: Red light. Fully Charged: Blue light.
5. Transmitter (Handheld) (L-100TH)
How to Use
- Power On: Press and hold the power button (1) for about 3 seconds. (The status indicator will light up blue, and the device will automatically connect to the receiver.)
- Power Off: Press and hold the power button (1) for about 1.5 seconds. The status indicator will turn off.
- Volume Up/Down: Briefly press the volume up button (2) or volume down button (3) to adjust the volume.
- Mute On/Off: Press the mute button (4). (When muted, the status indicator will blink blue.)
Status Indicator
How to Charge
Use a standard USB-C charger to charge the device. (Charging time with USB-C: Approximately 2 hours)
[Charging Status Indicator] Charging: Red light. Fully Charged: Green light.
6. Transmitter (Headset) (L-100TN)
How to Use
- Power On: Press and hold the power button (1) for about 3 seconds. (The status indicator will light up blue, and the device will automatically connect to the receiver.)
- Power Off: Press and hold the power button (1) for about 1.5 seconds. The status indicator will turn off.
- Volume Up/Down: Briefly press the volume up button (2) or volume down button (3) to adjust the volume.
- Mute On/Off: Quickly press the power button (1) twice. (When muted, the status indicator will blink blue.)
Status Indicator
How to Charge
Use a standard USB-C charger for charging. (Charging time with a USB-C charger: approx. 2 hours)
[Charging Status Indicator] Charging: Red light. Fully Charged: Green light.
7. Charging Storage Case – Charging and Bluetooth Connection
How to Charge the Storage Case
Charging storage case can be powered either by the included DC adapter or a standard USB-C charger.
- * Using DC Adapter: Full set charging time approx. 4.5 to 5 hours
- * Using USB-C Charger: Full set charging time approx. 9 hours
This storage case can charge up to 20 units simultaneously.
During Charging When Fully Charged
Bluetooth Connection
On an external device with Bluetooth (smartphone, tablet, etc.), search for and connect to 'LiberLink'.
8. Product Specifications
Transmitter Specifications
| Specification | Handheld (L-100TH) | Headset (L-100TN) |
| Model Name | L-100TH | L-100TN |
| Microphone Type | Condenser Microphone | 9750 Condenser |
| Directionality | Omnidirectional | Omnidirectional |
| Sensitivity / S.P.L | -38dB; (0dB=1V/Pa, 1KHz) | -38dB; (0dB=1V/Pa, 1KHz) |
| Operating Voltage | 3.7V/1000mAh(Handheld Type) | 3.7V/560mAh(Headset Type) |
| Operating Time | Approx. 9 hours | Approx. 4.5 hours |
| Max.Input Sound Pressure Level | 110dB | 110dB |
| Current Consumption | <0.5mA | <0.5mA |
| S/N Ratio | More than 68dB | More than 68dB |
| Bluetooth Range | 20 meters | 20 meters |
| Bluetooth Device Name | LiberLink | LiberLink |
| Transmission Frequency | 2.4GHz | 2.4GHz |
| Frequency Range | 20Hz-20000Hz | 20Hz-20000Hz |
| Dimensions (Handheld/Headset) | 40(W) x 137(H) x 40(D) mm | 30(W) x 68(H) x 20(D) mm *Including flexible boom arm 30(W) x 210(H) x 20(D) mm |
| Weight (Handheld/Headset) | 83g | 32g |
Receiver Specifications
| Specification | L-100RX |
| Model Name | L-100RX |
| Speaker diameter | 16±0.3mm |
| Speaker Impedance | 32Ω±15% At 1 V, 1200Hz |
| Reception Frequency | 50Hz-20KHz Ref. level: At output of S.P.L.:85dB |
| Operating Voltage | Unit: 3.7V/90mAh, Cradle: 3.7V/600mAh |
| Operating Time | Approx. 5 hours on a single charge, up to 13 hours using cradle |
| Dimensions (Cradle) | 58(W) x 57(H) x 33(D) mm |
| Dimensions (Unit) | 51(W) x 51(H) x 12(D) mm |
| Weight (Cradle) | 45g |
| Weight (Unit) | 11g |
Bluetooth Spec
- Bluetooth Ver.: BT8952U2 5.0 +RFX2401C
- Transmission/Reception Range: Effective Range: 50 meters, Maximum Range: 200 meters
Conformity Assessment for Broadcasting and Communication Equipment: R-R-EAR-L-100TH Handheld Type / R-R-EAR-L-100TN Headset Type, R-R-EAR-L-100RX Receiver
9. Product Precautions
Caution: Please read the user guide carefully and follow the instructions to ensure safe use.
- This product may produce noise in environments with radio interference.
- The effective transmission distance may vary depending on surrounding conditions.
- Dropping the product or subjecting it to impact may cause damage.
- Clean the product with a soft, dry cloth only.
- Do not use gasoline or other chemical solvents, as they may cause deformation or malfunction.
- In areas where wireless device use is prohibited (e.g., hospitals, airplanes), this product may interfere with nearby electronic devices.
- Exposure to water may cause malfunction.
Caution: If the device does not function properly, please check the following.
When the transmitter or receiver does not power on:
- Ensure that both transmitter and receiver are turned ON.
- If the battery is depleted, charge the device and turn it ON again.
When there is no sound output:
- Check the volume levels on both transmitter and receiver.
- Make sure the transmitter is not muted (a blinking blue status light indicates mute is ON).
When there is excessive noise:
- Check whether nearby devices are using similar frequency bands.
- If you hear a beeping sound from the receiver, the battery is low - please recharge before use.
- The battery may be fully drained - please recharge the device before trying again.
FCC Statement
This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.
The device has been evaluated to meet general RF exposure requirement. The device can be used in an uncontrolled environment without restriction.