Introduction
The CECO USA T150 is a high-performance, USB rechargeable bicycle taillight designed to enhance your visibility and safety during day and night rides. Featuring 150 lumens of brightness, multiple lighting modes, and a durable, waterproof design, this taillight is engineered for reliable use in various conditions. Please read this manual thoroughly to ensure proper installation, operation, and maintenance of your T150 taillight.
What's in the Box

Image: Contents of the CECO USA T150 package.
- CECO USA T150 Bicycle Taillight
- Flexible Mounting Strap
- Micro USB Charging Cable
- User Manual
Setup
1. Charging the Taillight
Before first use, fully charge the taillight. The T150 features a built-in rechargeable battery.
- Locate the Micro USB charging port on the taillight.
- Connect the provided Micro USB cable to the taillight and the other end to a USB power source (e.g., computer, USB wall adapter).
- The charging indicator light will illuminate during charging and change color or turn off when fully charged.

Image: Taillight connected to a USB charging cable.
2. Mounting the Taillight
The T150 taillight comes with a heavy-duty flexible mount designed for easy and secure attachment to various bicycle components.
- Identify a suitable mounting location on your bicycle, such as the seatpost or seatstay. The mount fits seatposts up to 4 inches in circumference (1.25 inches in diameter).
- Wrap the flexible strap around the chosen component.
- Secure the strap by hooking it onto the designated latch on the taillight mount. Ensure the light is firmly attached and does not wobble.
- Adjust the light's angle using the adjustable hinge to ensure it is aimed correctly for maximum visibility.

Image: Mounting the taillight on a seatpost and seatstay.

Image: The compact size of the T150 taillight.
Operating Instructions
Power Button and Mode Selection
The CECO USA T150 taillight features a single power button for all operations.
- To Turn On/Off: Press and hold the power button for approximately 1-2 seconds.
- To Change Modes: While the light is on, short press the power button to cycle through the available lighting modes.
Lighting Modes
The T150 offers 6 distinct lighting modes for various riding conditions:
- 4 Flashing Modes: Optimized for high visibility in city traffic and open roads, including a Daytime Running Light technology to grab attention.
- 2 Steady Modes:
- High Brightness: For maximum illumination.
- Low Output: A group-friendly option for rides with others.

Image: Overview of the T150's lighting modes.
Maintenance
- Cleaning: Wipe the taillight with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the taillight in a cool, dry place when not in use. For prolonged storage, ensure the battery is partially charged (around 50%) and recharge it every few months to maintain battery health.
- Water Resistance: The T150 is IP67 waterproof, meaning it is protected from dust and can withstand immersion in water up to 1 meter for 30 minutes. While durable, avoid prolonged submersion or high-pressure water jets. Ensure the USB port cover is securely closed to maintain water resistance.
Troubleshooting
- Light not turning on: Ensure the battery is charged. Connect to a USB power source and check the charging indicator.
- Light not charging: Verify the USB cable is properly connected to both the taillight and the power source. Try a different USB cable or power adapter.
- Dim light output: The battery may be low. Recharge the taillight.
- Mount not secure: Ensure the flexible strap is tightly wrapped and latched. Adjust the position if necessary.
Specifications
| Feature | Specification |
|---|---|
| Model | T150 |
| Light Output Maximum | 150 Lumens |
| Power Source | Battery Powered (USB Rechargeable) |
| Water Resistance Rating | IP67 (Waterproof) |
| Impact Resistance | FL-1 Certified |
| Number of Modes | 6 (4 Flashing, 2 Steady) |
| Mounting Type | Flexible Seatpost/Seatstay Mount |
| Material | Plastic |
| Item Weight | 0.1 kg |
Warranty Information
CECO USA products are designed for quality and durability. This product is covered by a manufacturer's warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official CECO USA website.
Support
For further assistance, technical support, or to inquire about replacement parts, please visit the official CECO USA website or contact our customer service team. Contact details can typically be found on our website or on the product packaging.