1. Introduction
Thank you for purchasing the OLIGHT RN 120 C Rear Bike Light. This intelligent and ultra-bright bicycle taillight is designed to enhance your safety during day and night cycling. Featuring a maximum output of 120 lumens, Type-C rechargeable capabilities, and IPX6 waterproofing, the RN 120 C is built for reliable performance in various conditions. This manual provides detailed instructions for proper setup, operation, and maintenance to ensure optimal performance and longevity of your device.
Image: The OLIGHT RN 120 C Rear Bike Light, showcasing its compact design and bright red illumination.
2. Product Overview
2.1 Components
- RN 120 C Rear Bike Light Unit
- Mounting Strap
- Saddle Mount
- USB Type-C Charging Cable
- User Manual (this document)
Image: The complete package contents of the RN 120 C, showing the light, various mounting accessories, and the charging cable.
2.2 Key Features
- High Visibility: 120 lumens maximum output with 260-degree visibility and up to 1500 meters max visibility for enhanced safety.
- Smart Sensors:
- Ambient Light Sensor: Automatically adjusts brightness based on surrounding light conditions.
- Motion Sensor: Detects braking and increases light output to 120 lumens for 3 seconds to signal deceleration.
- Durable Design: IPX6 waterproof rating ensures resistance to water from any direction.
- Convenient Charging: Quick charging via USB Type-C, fully charged within 1 hour.
- Compact and Lightweight: Weighs only 26 grams, making it easy to carry and mount.
Image: A visual summary of the RN 120 C's performance metrics and durability features.
3. Setup and Installation
The RN 120 C offers versatile mounting options for quick installation and removal.
3.1 Seat Tube Mounting (using Mounting Strap)
- Attach the mounting strap to the light unit.
- Wrap the strap around your bicycle's seat tube (suitable for diameters of 22-35 mm).
- Secure the strap firmly to ensure the light is stable and facing directly backward.
3.2 Saddle Mounting (using Saddle Mount)
- Attach the saddle mount to the light unit.
- Slide the saddle mount onto the rails of your bicycle saddle until it clicks securely into place.
- Ensure the light is positioned correctly and firmly attached.
Image: Step-by-step diagrams illustrating how to install the RN 120 C on a seat tube or under a saddle.
Image: The RN 120 C being mounted, highlighting the simple and secure attachment mechanism.
4. Operation
4.1 Power On/Off
- To turn the light ON or OFF, press and hold the power button for approximately 1 second.
4.2 Changing Modes
- To cycle through the different lighting modes (e.g., High, Low, Flash, Eco, Smart Day, Smart Night), double-click the power button.
4.3 Adjusting Brightness
- To cycle through brightness settings within a mode, short-click the power button.
- The light has a memory function, meaning it will turn on in the last used mode.
Image: The RN 120 C in hand, illustrating the simplicity of its single-button control.
4.4 Smart Features
- Brake Sensing: When the built-in motion sensor detects braking, the light output will automatically increase to 120 lumens for 3 seconds to alert following traffic.
- Ambient Light Sensing: The integrated light sensor automatically adjusts the brightness of the light to match your environment, ensuring optimal visibility during both day and night.
Image: The RN 120 C activating its brighter output during braking, enhancing safety.
Image: The RN 120 C intelligently adjusting its brightness to suit the surrounding light conditions.
5. Charging
The RN 120 C is equipped with a built-in rechargeable Lithium Ion battery and charges via a USB Type-C port.
- Connect the provided USB Type-C charging cable to the charging port on the light.
- Connect the other end of the cable to a USB power source (e.g., computer, wall adapter).
- A full charge typically takes approximately 1 hour.
- The indicator light on the device will show charging status (e.g., red for charging, green for fully charged).
Image: The RN 120 C connected to its USB-C charging cable, illustrating the convenient charging process.
6. Maintenance
- Cleaning: Wipe the light with a soft, damp cloth to remove dirt and debris. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the light in a cool, dry place when not in use. If storing for extended periods, charge the battery every 3-6 months to maintain battery health.
- Waterproofing: Ensure the USB port cover is securely closed to maintain the IPX6 waterproof rating, especially before riding in wet conditions.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Light does not turn on. | Battery is depleted. | Charge the light using the provided USB Type-C cable. |
| Light turns off unexpectedly. | Low battery. | Recharge the light. |
| Light is not bright enough or not adjusting. | Smart sensor obstructed or dirty. | Clean the sensor area. Ensure no obstructions are blocking the light sensor. |
| Brake sensing not working. | Light not mounted securely or sensor obstructed. | Ensure the light is firmly mounted and the motion sensor is clear of obstructions. |
8. Specifications
| Feature | Detail |
|---|---|
| Model | RN 120 C |
| Maximum Output | 120 Lumens |
| Visibility | 260-degree, 1500 meters max |
| Waterproof Rating | IPX6 |
| Power Source | Rechargeable Lithium Ion Battery (included) |
| Charging Port | USB Type-C |
| Charging Time | Approx. 1 hour |
| Max Runtime | 100 hours (Eco mode) |
| Weight | 26 grams |
| Dimensions (L x W x H) | 3.5 x 3.4 x 3 cm |
| Material | Plastic |
| Mounting Type | Seatpost Mount, Saddle Mount |
Image: Detailed output specifications for various lighting modes and their corresponding runtimes.
9. Warranty and Support
OLIGHT products are manufactured with high-quality materials and craftsmanship. For specific warranty information and customer support, please refer to the warranty card included with your product or visit the official OLIGHT website. Keep your purchase receipt as proof of purchase for warranty claims.
For further assistance, please contact OLIGHT customer service through their official channels.
