Nulaxy KM34 Bluetooth FM Transmitter User Manual

Introduction

The Nulaxy KM34 is an advanced Bluetooth V5.3 Car FM Transmitter designed to enhance your in-car audio experience. It allows you to stream music wirelessly from your smartphone, make hands-free calls, and charge your devices with its fast-charging ports. Featuring adjustable treble and bass controls, the KM34 delivers personalized sound quality for an immersive driving experience.

Safety Information

Please read and follow these safety guidelines to ensure proper operation and prevent damage:

• Avoid exposing the device to water or excessive moisture.
• Do not disassemble, repair, or modify the device. This may cause electric shock, fire, or damage to the product.
• Keep the device away from extreme temperatures, direct sunlight, and open flames.
• Ensure proper ventilation around the device during use.
• Dispose of the device and its components according to local regulations.
• The device may cause interference with other electronic devices. Maintain a safe distance from sensitive equipment.

Package Contents

• Nulaxy KM34 Bluetooth FM Transmitter
• User Manual

Product Overview

Familiarize yourself with the components of your Nulaxy KM34 FM Transmitter.

Figure 1: Front view of the Nulaxy KM34 Bluetooth FM Transmitter, showing the display, control buttons, USB ports, and bass/treble adjustment wheels.

Key Components:

• FM Display: Shows current FM frequency and voltage.
• CH+/CH- Buttons: Adjust FM frequency.
• Previous/Next Track Buttons: Control music playback.
• Multi-function Knob: Press to answer/end calls, play/pause music; rotate to adjust volume.
• USB-C PD 30W Port: Power Delivery fast charging port.
• USB 5V/2.4A Port: Standard charging and U-disk music playback port.
• Bass Adjustment Wheel: Fine-tune bass levels.
• Treble Adjustment Wheel: Fine-tune treble levels.
• LED Color Spectrum: Visualizes music and atmosphere.

Setup Guide

1. Power Connection:

   Insert the Nulaxy KM34 into your vehicle's 12V-24V cigarette lighter socket. The device will power on automatically and display the current car battery voltage for a few seconds before showing the FM frequency.

   

   Figure 2: The Nulaxy KM34 plugged into a car's power outlet, displaying the vehicle's battery voltage.

2. Setting FM Frequency:

   To avoid interference, find an empty FM frequency on your car radio that has no existing broadcast.
   Press the "CH+" or "CH-" buttons on the KM34 to adjust its frequency to match the empty frequency on your car radio.
   Tip: A clear, unused frequency will minimize static and improve audio quality.

3. Bluetooth Pairing:

   Once the KM34 is powered on, it will automatically enter Bluetooth pairing mode.
   On your smartphone or Bluetooth-enabled device, open Bluetooth settings and search for "KM34".
   Select "KM34" to connect. A voice prompt will confirm successful pairing.

   

   Figure 3: An internal diagram illustrating the Bluetooth 5.3 technology within the Nulaxy KM34, ensuring stable and high-quality audio connections.

Operating Instructions

Music Playback:

• Bluetooth Streaming: After successful pairing, play music from your device. The audio will transmit to your car stereo via the set FM frequency.
• U-Disk Playback: Insert a U-disk (USB flash drive, max 64GB) into the 5V/2.4A USB port. The KM34 will automatically detect and play music files (MP3, WMA, WAV, APE, FLAC formats supported).
• Volume Adjustment: Rotate the multi-function knob clockwise to increase volume, counter-clockwise to decrease.
• Track Control: Use the Previous/Next Track buttons to skip songs.
• Bass and Treble Control: Use the dedicated scroll wheels to adjust bass and treble levels to your preference.

Figure 4: The Nulaxy KM34 connected to a smartphone, demonstrating Hi-Fi music streaming with color lighting that auto-syncs with the music.

Hands-Free Calling:

• Answer Call: Press the multi-function knob once.
• End Call: Press the multi-function knob once during a call.
• Reject Call: Press and hold the multi-function knob for 2 seconds.
• Redial Last Number: Double-press the multi-function knob.

Voice Assistant Activation:

• Press and hold the multi-function knob for 2 seconds (when not on a call) to activate your phone's voice assistant (Siri, Google Assistant, etc.).

Figure 5: The Nulaxy KM34 enabling voice assistant functionality on a smartphone for safer, hands-free operation while driving.

Charging Devices:

• USB-C PD 30W Port: Provides fast charging for compatible devices, capable of charging an iPhone from 0-85% in approximately 30 minutes.
• USB 5V/2.4A Port: Offers standard charging for various devices.

Figure 6: The Nulaxy KM34 demonstrating its dual USB charging capabilities, including a PD 30W port for rapid device charging.

Maintenance

To ensure the longevity and optimal performance of your Nulaxy KM34, follow these maintenance tips:

• Clean the device regularly with a soft, dry cloth. Do not use liquid cleaners or aerosols.
• Keep the device free from dust and debris, especially around the charging ports and buttons.
• Store the device in a cool, dry place when not in use.
• Avoid dropping or subjecting the device to strong impacts.

Troubleshooting

Specifications

• Model: KM34
• Bluetooth Version: V5.3
• Input Voltage: 12-24V
• USB-C Output: PD 30W Max
• USB-A Output: 5V/2.4A
• U-Disk Capacity: Up to 64GB
• Supported Audio Formats: MP3, WMA, WAV, APE, FLAC
• Package Dimensions: 5.16 x 3.07 x 2.13 inches
• Weight: 3.84 ounces

Warranty and Support

Nulaxy products come with a standard manufacturer's warranty. For detailed warranty information, technical support, or customer service inquiries, please visit the official Nulaxy website or contact their customer support team directly. Please retain your proof of purchase for warranty claims.

Nulaxy Official Store: Visit Nulaxy Store on Amazon