1mii B03 Bluetooth Transmitter and Receiver 2-in-1 User Guide

Contents

• 1. Product Specifications
• 2. Package Contents
• 3. Product Overview & Control Functions
• 4. LED Indications
• 5. Use as a Transmitter (TX mode) Installation Diagram
• 6. Use as a Receiver (RX mode) Installation Diagram
• 7. Bypass mode (Non-Bluetooth) Installation Diagram
• 8. Pair and Connect two Devices Simultaneously
• 9. Restore Factory Default Settings
• 10. Troubleshooting
• 11. Warnings
• 12. Disposal
• 13. FCC Notice

1. Product Specifications

2. Package Contents

• 1 x 1mii B03 Bluetooth Transmitter and Receiver
• 1 x Power Adapter
• 1 x USB Power Cable
• 1 x Optical Cable
• 1 x 3.5mm Female to RCA Male Cable
• 1 x User Manual
• 1 x Quick User Guide

3. Product Overview & Control Functions

Device Description

The 1mii B03 is a wireless long-range audio transmitter and receiver incorporating the latest aptX Low Latency technology for CD-like quality sound with virtually no delay. It supports Optical, by-pass, and voice prompts, providing a solution to wirelessly stream Hi-Fi audio directly to any wireless headphones or speakers.

Control Functions

• [Power Switch]: Slide to ON to turn on the device. Slide to OFF to turn off the device.
• [Mode Switch]: Slide to TX to enter transmitting mode. Slide to RX to enter receiving mode. Slide to BYPASS to enter Bypass mode.
• [Button]:
  • Press and hold for ~5 seconds: Enter pairing mode (TX/RX). Reconnect.
  • Short press: Switch between AUX/OPT audio input mode. (Note: TX mode does not support this function for volume control).
  • Volume Down / Previous Song: In AUX audio mode, short press.
  • Volume Up / Next Song: In AUX audio mode, short press.

4. LED Indications

• Receiving Mode (RX): Flashes Blue and Red alternately to indicate 1mii B03 is in pairing mode.
• Transmitting Mode (TX): Flashes Blue and Red alternately to indicate 1mii B03 is in pairing mode.
• Bypass: Bypass mode.
• OPT: Optical audio mode.
• AUX: AUX audio mode.

5. Use as a Transmitter (TX mode) Installation Diagram

Description: Connect your audio source (e.g., TV, DVD player) to the 1mii B03's "AUDIO IN" ports using the provided Optical, AUX, or RCA cable. Connect the 1mii B03 to a power source using the USB cable and adapter. Slide the [Power Switch] to the ON position. Slide the [Mode Switch] to the TX position. Select the correct audio input mode (AUX or OPT) by short-pressing the [Button]. Pair the 1mii B03 with your Bluetooth-enabled headphones or speakers. Set 1mii B03 to pairing mode ([TX LED] flashes Blue and Red alternately fast). For first-time use, 1mii B03 will automatically enter pairing mode with clear memory. For subsequent uses, press the [Button] for 5 seconds to enter pairing mode. Activate Bluetooth on your phone or another device to find "1mii B03" to connect. Wait until connected. For quick pairing, keep them within 1 meter when pairing.

Connections:

• TV/Source -> 1mii B03 ([Optical/AUX/RCA IN])
• 1mii B03 ([USB Power]) -> Power Source
• 1mii B03 ([Optical/AUX/RCA OUT]) -> Speakers/Headphones

6. Use as a Receiver (RX mode) Installation Diagram

Description: Connect your audio source (e.g., phone, tablet) to the 1mii B03's "AUDIO IN" ports using the provided Optical, AUX, or RCA cable. Connect the 1mii B03 to a power source using the USB cable and adapter. Slide the [Power Switch] to the ON position. Slide the [Mode Switch] to the RX position. Select the correct audio input mode (AUX or OPT) by short-pressing the [Button]. Pair the 1mii B03 with your Bluetooth-enabled phone or device. Set 1mii B03 to pairing mode ([RX LED] flashes Blue and Red alternately fast). Activate Bluetooth on your phone or another device to find "1mii B03" to connect. Wait until connected.

Connections:

• Phone/Source -> 1mii B03 ([Optical/AUX/RCA IN])
• 1mii B03 ([USB Power]) -> Power Source
• 1mii B03 ([Optical/AUX/RCA OUT]) -> Speakers

7. Bypass mode (Non-Bluetooth) Installation Diagram

Description: This mode allows you to bypass Bluetooth, connecting your TV/source directly to your speakers via wired connections through the 1mii B03. This design enables switching between wired Bypass mode and wireless Bluetooth mode with just one switch without needing to disconnect any cables. Connect your audio source (e.g., TV, DVD player) to the 1mii B03's "AUDIO IN" ports using the provided Optical, AUX, or RCA cable. Connect your speakers to the 1mii B03's "AUDIO OUT" ports with your own audio cable (Optical, AUX, RCA). Connect the 1mii B03 to a power source using the USB cable and adapter. Slide the [Power Switch] to the ON position. Slide the [Mode Switch] to the BYPASS position. Press the [Button] (OPT/AUX) to choose the right connection from modes like AUX IN to AUX OUT, OPT IN to OPT OUT.

Connections:

• TV/Source -> 1mii B03 ([Optical/AUX/RCA IN])
• 1mii B03 ([Optical/AUX/RCA OUT]) -> Speakers
• 1mii B03 ([USB Power]) -> Power Source

8. Pair and Connect two Devices Simultaneously

In TX mode

1. Pair with the first device by following the previous instructions in the "Use as a Transmitter (TX mode)" section.
2. Pair with the second device: Set the second headphone/speaker to pairing mode. Set 1mii B03 to pairing mode again by pressing the [Button] for seconds until the [TX LED] flashes Blue and Red alternately fast. Wait until connected.

In RX mode

1. Pair with the first device by following the previous instructions in the "Use as a Receiver (RX mode)" section.
2. Pair with the second device: Set 1mii B03 to pairing mode again by pressing the [Button] until the [RX LED] flashes Blue and Red alternately fast. Activate Bluetooth on the second device to find "1mii B03" to connect. Wait until connected.

Notes:

• For improved compatibility and sound quality, it is suggested to use Bluetooth devices with CSR chipsets.
• When using dual link, 1mii B03 does not support aptX Low Latency.
• Only one device can play music at a time. You must stop the music on one device to play on the other.

Audio Delay

When paired with different headphones/receivers, the audio delay will vary based on the receiver's support for aptX Low Latency, aptX, or SBC codecs.

• aptX Low Latency Codec: ~30-40ms
• aptX Codec: ~30-40ms
• SBC Codec (most standard Bluetooth audio): ~70-100ms

9. Restore Factory Default Settings

You may need to reset 1mii B03 if it is not working as expected. When 1mii B03 is reset to factory default settings, all paired device information will be cleared. Press and hold both the [Button] and the [Volume Up] button until the [RX/TX LED] flashes Blue and Red.

10. Troubleshooting

Problem: Having trouble pairing and connecting to Bluetooth devices.

Solution: Check if your wireless device supports the wireless profiles listed in the specifications. Ensure 1mii B03 and your device are next to each other, within 1 meter. Make sure both 1mii B03 and the wireless device are in pairing mode.

Problem: After connecting and pairing with my wireless device, I cannot hear any music from my sound system.

Solution: Make sure you select the correct audio input mode (AUX/OPT) by short-pressing the [Button]. Make sure to remove the protective cap on the optical cable. In Optical mode, 1mii B03 supports devices with a sampling rate under 96KHz.

11. Warnings

Warranty service is limited to normal use. Any man-made damages, such as from connecting to an unsuitable power source, using an unsuitable device, or not following the instructions, as well as damages that did not occur during shipping, repairs, and adjustments not approved by the company, and damages from misuse, inattention, or improper installation may cause the warranty to be ineffective immediately. This warranty does not include shipping fees.

12. Disposal

Always dispose of the used appliance at a recycling center. Do not dispose of the used appliance together with household waste.

13. FCC Notice

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.

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.

NOTE 1: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.