JOYROOM 81W Bluetooth 5.4 FM Transmitter Car Adapter User Manual

1. Introduction

Thank you for choosing the JOYROOM 81W Bluetooth 5.4 FM Transmitter Car Adapter. This device allows you to stream audio from your Bluetooth-enabled devices to your car's FM radio, make hands-free calls, and rapidly charge your mobile devices. Please read this manual carefully before use to ensure optimal performance and safety.

Image: The JOYROOM 81W Bluetooth 5.4 FM Transmitter Car Adapter, showcasing its compact design, LED display, and multiple charging ports.

2. Important Safety Information

To ensure safe operation and prevent damage, please adhere to the following guidelines:

• Always follow the instructions provided with the product.
• Do not use the device if the power cord or plug is damaged.
• Keep the device away from heat sources and avoid exposing it to excessive temperatures or humidity.
• Do not dispose of the device in fire or water.
• Always turn off the device when not in use.
• Keep the device out of reach of children and pets.
• Do not use the device while driving unless it is legal and safe to do so in your jurisdiction.
• Always follow local laws and regulations regarding the use of wireless devices in vehicles.

3. Package Contents

• JOYROOM 81W Bluetooth 5.4 FM Transmitter Car Adapter
• User Manual

4. Product Components

Familiarize yourself with the different parts of your FM transmitter:

Image: Labeled diagram of the FM transmitter, indicating Dual Microphones, LED Display, BASS button, Previous/Next buttons, Multifunctional button, Light Button, Type-C 45W charging port, QC3.0 36W charging port, and USB flash drive port.

• Dual Microphones: For enhanced call clarity.
• LED Display: Shows FM frequency and voltage.
• BASS Button: Activates deep bass sound effect.
• Previous/Next Buttons: For track control.
• Multifunctional Button: Controls calls, playback, and volume.
• Light Button: Controls the 7-color LED light bar.
• Type-C 45W Charging Port (PD3.0): For fast charging compatible devices.
• QC3.0 36W Charging Port: For fast charging compatible devices.
• USB Flash Drive Port: For music playback from a USB drive.

5. Key Features

• Bass Boosted & Hi-Fi Stereo: One-click BASS sound effect and HiFi technology for rich, clear audio.
• Dual Microphones & Hands-free: Upgraded dual microphones with CVC noise reduction and echo cancellation for clear calls.
• 81W Fast Charge: Equipped with 45W PD3.0 and 36W QC3.0 ports for simultaneous fast charging.
• Bluetooth 5.4 & U-Disk: Advanced Bluetooth 5.4 chip for faster, more stable transmission, supporting both Bluetooth and USB drive playback.
• LED Light Bar & LED Indicator: 7-color LED light bar for visibility in the dark (can be turned off) and an LED indicator for voltage detection.
• Safer & Widely Used: Multiple protections (over-current, over-voltage, over-heat, short-circuit) and compatibility with 12V-24V cigarette lighter sockets.

Image: Illustration demonstrating the enhanced dual microphones with CVC noise cancellation, showing a graph of noise reduction.

Image: The FM transmitter with a visual representation of powerful bass sound waves, highlighting the 'b' button for bass boost.

Image: A close-up diagram of the internal Bluetooth 5.4 chip, emphasizing faster connection, transmission, and noise cancellation.

Image: Visual representation of HiFi Stereo Music quality, showing a signal-noise ratio graph with and without bass sound.

6. Setup Guide

Follow these steps to set up your JOYROOM FM Transmitter:

Image: A three-step visual guide showing how to set up the FM transmitter: finding an unused FM station, tuning the transmitter to the same channel, and connecting via Bluetooth.

Step 1: Find an Unused FM Station

Tune your car's FM radio to an empty station, one that only has static and no interference from active radio broadcasts. This will ensure the best audio quality.

Step 2: Tune the Transmitter to the Same Channel

Plug the JOYROOM FM Transmitter into your car's cigarette lighter socket. The LED display will light up. Adjust the transmitter's frequency to match the empty FM station you found in Step 1. Use the frequency adjustment controls on the device.

Step 3: Bluetooth Connection

On your mobile device, enable Bluetooth and search for available devices. Select "JR-CCB01" from the list to pair. Once connected, audio from your phone will be transmitted to your car's speakers via the selected FM frequency.

7. Operating Instructions

7.1 Music Playback

• Bluetooth Streaming: Once paired, play music on your mobile device, and it will transmit through your car's speakers.
• USB Drive Playback: Insert a USB flash drive containing MP3/WMA/WAV/FLAC files into the USB flash drive port. The device will automatically detect and play the music.
• Volume Control: Rotate the multifunctional button to adjust the volume.
• Track Control: Use the Previous/Next buttons to skip tracks.
• Bass Boost: Press the 'b' button to activate or deactivate the deep bass sound effect.

7.2 Hands-Free Calling

Image: A woman driving, demonstrating the hands-free calling feature with the FM transmitter visible in the car.

• Answer Call: Press the multifunctional button once to answer an incoming call.
• End Call: Press the multifunctional button once during a call to end it.
• Reject Call: Press and hold the multifunctional button to reject an incoming call.
• Redial: Double-press the multifunctional button to redial the last number.

7.3 Charging Devices

Image: The FM transmitter connected to a car's cigarette lighter, simultaneously fast charging a Samsung S25 and an iPhone 14 Pro, illustrating its 81W power output.

Image: The FM transmitter simultaneously charging a smartphone and a tablet, demonstrating its dual-port charging capability.

The transmitter features two fast-charging ports:

• Type-C 45W (PD3.0): For devices supporting Power Delivery fast charging.
• QC3.0 36W: For devices supporting Quick Charge 3.0 fast charging.

Connect your devices using appropriate charging cables to utilize the fast charging capabilities.

7.4 LED Light Bar

Image: The FM transmitter plugged into a car's console, illuminating the surrounding area with its colorful LED light bar, enhancing the car's interior ambiance.

The device features a 7-color LED light bar. Press the Light Button to cycle through colors or turn the lights off. This feature helps locate the device in the dark and adds to the car's interior ambiance.

8. Troubleshooting

9. Specifications

10. Maintenance

• Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or aerosols.
• Storage: Store the device in a cool, dry place when not in use.
• Avoid Impact: Do not drop or subject the device to strong impacts.

11. Warranty and Support

JOYROOM products are designed and manufactured to the highest quality standards. For warranty information or technical support, please refer to the contact details provided on the product packaging or visit the official JOYROOM website. Please retain your proof of purchase for warranty claims.