YUKI Electric Bike Horn EH-2 PLUS User Manual

1. Introduction

Thank you for choosing the YUKI Electric Bike Horn EH-2 PLUS. This device is designed to enhance your safety by providing a loud and clear warning sound for cyclists and scooter riders. Please read this manual thoroughly before use to ensure proper installation, operation, and maintenance.

2. Safety Information

• Always ensure the horn is securely mounted before riding.
• Do not immerse the horn in water, despite its IPX5 rating, to prevent potential damage.
• Keep the device away from extreme temperatures and direct sunlight.
• Do not attempt to disassemble or modify the horn, as this will void the warranty and may cause malfunction.
• Use only the provided charging cable or a compatible Type-C cable for charging.

3. Package Contents

Verify that all items are present in your package:

• YUKI Electric Bike Horn (EH-2 PLUS)
• Fixed Mount
• 22.2mm/0.87 inch Carrier Ring
• 25.4mm/1.0 inch Carrier Ring
• Type-C Charge Cable
• Phillips Screwdriver
• Hex Wrench
• Screw Kits (Screw and Nut)

Figure 3.1: Package Contents. This image displays all components included with the YUKI EH-2 PLUS Electric Bike Horn, laid out clearly for identification.

4. Product Overview

The YUKI EH-2 PLUS is a compact and powerful electric bike horn designed for clear and effective signaling. It features a single button for operation and a trumpet-shaped design for optimal sound projection.

Figure 4.1: YUKI EH-2 PLUS Electric Bike Horn. A visual representation of the main horn unit.

Figure 4.2: Single Button Operation. This image illustrates the minimalist design with one button for activation and the charging port.

5. Setup

5.1. Charging the Horn

Before first use, fully charge the horn. The device is equipped with a 300mAh Lithium-ion battery and charges via a Type-C port.

1. Locate the Type-C charging port on the horn unit.
2. Connect the provided Type-C charge cable to the horn and a compatible USB power source (e.g., computer, wall adapter).
3. A full charge typically takes approximately 2 hours. The indicator light will change to signify a full charge (refer to product packaging or specific LED behavior if available).

Figure 5.1: Charging the Horn. This image shows the horn connected to a Type-C charging cable, highlighting its battery capacity and charging time.

5.2. Installation on Handlebar

The YUKI EH-2 PLUS is designed to fit various handlebar sizes using the included carrier rings.

1. Identify the diameter of your bicycle or scooter handlebar. The horn supports 0.87 inch (22.2mm) and 1.0 inch (25.4mm) handlebars.
2. Select the appropriate carrier ring for your handlebar size.
3. Place the fixed mount on your handlebar at the desired location.
4. Insert the selected carrier ring into the fixed mount to secure it snugly around the handlebar.
5. Attach the horn unit to the fixed mount using the provided screw and hex wrench. Ensure it is tightened securely to prevent movement during riding.
6. Position the horn so that the sound output is unobstructed and the button is easily accessible.

Figure 5.2: Handlebar Installation. This image demonstrates the use of carrier rings to adapt the horn to different handlebar diameters.

6. Operating the Horn

The YUKI EH-2 PLUS features a simple, single-button operation.

1. Once installed and charged, press the button located on the horn unit.
2. The horn will emit a loud, 120dB sound to alert pedestrians and vehicles.
3. Release the button to stop the sound.

Figure 6.1: Sound Output. This image visually represents the 120dB sound projection of the horn in a traffic scenario.

Figure 6.2: Effective Range. This image demonstrates the horn's sound transmission distance of 30 meters.

7. Maintenance

7.1. Cleaning

To clean the horn, wipe it with a soft, damp cloth. Do not use abrasive cleaners or solvents.

7.2. Water Resistance

The YUKI EH-2 PLUS has an IPX5 waterproof rating, meaning it is protected against low-pressure water jets from any direction. It is suitable for use in light rain but should not be submerged in water or exposed to heavy downpours for extended periods.

Figure 7.1: IPX5 Water Resistance. This image shows the horn's ability to withstand water splashes.

7.3. Battery Care

To prolong battery life, avoid fully discharging the horn frequently. Recharge the battery when the sound output becomes noticeably weaker or if the horn has not been used for an extended period.

8. Troubleshooting

• Horn not sounding:
  • Ensure the battery is charged. Connect the horn to a power source and charge for at least 30 minutes.
  • Check if the button is being pressed correctly.
• Sound is weak:
  • The battery may be low. Recharge the horn fully.
• Horn is loose on handlebar:
  • Tighten the mounting screw using the provided hex wrench.
  • Ensure the correct carrier ring is used for your handlebar diameter.
• Charging issue:
  • Verify the Type-C cable is securely connected to both the horn and the power source.
  • Try a different Type-C cable or USB power adapter.

9. Specifications

10. Warranty and Support

The YUKI Electric Bike Horn EH-2 PLUS comes with a 1-year limited warranty from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper installation.

For warranty claims or technical support, please contact YUKI customer service through the retailer where the product was purchased or visit the official YUKI brand store online.

Online Support: YUKI Official Store on Amazon