BA-55T Dual Source LE Audio Transmitter

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Product Information

Specifications

• Model: BA-55T
• Bluetooth Version: 5.3 LE
• Transmitter Type: Audio
• Dual Source: Yes
• LED Indicators: A, B, C, D, E, F
• Codec Support: aptX, LC3

Product Usage Instructions

Overview of Buttons and LEDs

Slide Switch Button A controls LED A. Button B controls LED C.
Button C controls LED D, E, and F.

Instructions for Different Scenarios

• Idle: No LED activity

• Pairing: LED A flashes steadily

• Connected: LED A flashes once every 2
  seconds

• Connecting: LED A flashes once every 2 seconds
  for aptX codec, flashes twice every 2 seconds for LC3 codec

• Volume Adjustment: Use Button A or B to adjust
  volume

• Battery Status: LED D on for battery voltage

  90%, LED F flashes for low battery

• Charging: LED E flashes during charging

Description of LED Patterns

• A: Flash steadily – Pairing mode, Flash once
  every 2 seconds – Connected

• C: Flash once – Battery voltage > 90%,
  Flash rapidly – Low battery

• D: On – Battery voltage > 90%

• F: Flashing – Low battery

FAQ (Frequently Asked Questions)

Q: What do I do if pairing fails or the device gets

disconnected?

A: Enter pairing mode to reconnect the device.

Q: How can I adjust the volume on the transmitter?

A: Use Button A or Button B to adjust the volume in 9 steps.

Q: How can I check the battery status?

A: LED C indicates the battery status – Flashing once for
battery voltage > 90% and flashing rapidly for low battery.

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Dual source to BT5.3 LE Audio Transmitter BA-55T
USER’S GUIDE
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Overview
slide switch button A LED B

LED A

button B LED C button C

LED D LED E LED F

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Instructions

Scenarios Button

LED

Idle

N/A

N/A

Pairing Auracast
Connected
Connecting Volume down Volume up Full Battery Low battery

(C) Double Click (C) Triple Click
N/A
N/A (A) Click or hold (B) Click or hold N/A N/A

(A) Flash steady (C) Flash 1 time (A) Flash 1 time every 2 seconds (B) if it’s aptX codec:
Flash 1 time every 2 seconds (C) if it’s LC3 codec:
Flash 2 times every 2 seconds (C) Flash rapidly
N/A
N/A (D) ON (F) Flash

Charging

N/A

(E) Flash

Description Pairing failed or Disconnected. Enter Pairing Mode. Start broadcasting.
Connection successful.
Try to connect with last device. 1. USB-IN: AVRCP 2. LINE-IN:
Can be adjusted in 9 steps. Battery voltage > 90% Battery voltage < 30% Charging and battery voltage < 90%

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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. 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.
Any changes or modifications not expressly approved by the party responsible for compliance could void the authority to operate equipment. FCC RF Radiation Exposure Statement: For portable operation, this device has been tested and meets FCC RF exposure guidelines. When used with an accessory that contains metal may not ensure compliance with FCC RF exposure guidelines.
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