SOLAR LOW INTENSITY OBSTRUCTION LIGHT TYPE B – YFFY-02-L
As a leading solar obstruction light manufacturer, the YFFY-02-L Solar Low Intensity Obstruction Light Type B is engineered to enhance aviation safety by providing highly reliable visual warnings for aircraft. Designed for demanding environments, it ensures regulatory compliance while improving the visibility of critical structures during nighttime and low-visibility conditions.
Compliance With Standards
- CAAC: MH5001-2021, MH/T6012-2015, AC-137-CA-2017-05, AC-137-CA-2015-01, AC-137-CA-2015-02
- ICAO: Annex 14, Volume I
Certified Quality: Fully compliant as an ICAO Annex 14 Type B light and recognized as a CAAC certified obstruction marking solution, ensuring international aerospace safety.
North American Standards: Built to perform as an FAA compliant solar aviation light for reliable obstacle identification.
Weatherproof Design: Features an IP66 waterproof aviation light housing made of heavy-duty aluminum alloy to survive harsh marine and coastal environments.
Key Features
- Professional Industrial Design: Robust, attractive appearance suitable for all installations.
- High-Efficiency LED: Long operational life, superior energy efficiency, and minimal light degradation.
- Advanced Optical Performance: Fresnel lens system with precision manufacturing ensures excellent light projection and visibility.
- Easy Installation & Maintenance-Free: Simple setup with minimal upkeep requirements.
- Durable & Reliable: Strong electromagnetic interference and vibration resistance for stable operation.
- Impact-Resistant Lens: UV-resistant polycarbonate (PC) lens, optionally equipped with bird spikes; thermal stability and flame-retardant properties.
- Enhanced Safety Features: Optional lamp failure monitoring, alarm output, and integrated anti-drop safety device for secure installation.
- Rechargeable Battery Powered: Standard nickel-metal hydride (Ni-MH) batteries allow easy replacement and maintenance.
- Flexible Operation: Selectable flashing or steady-burning modes with adjustable flash frequency.
- Extended Autonomy: Over 7 days of operation in continuous rainy or low-sunlight conditions.
Technical Specifications of Low Intensity Obstruction Light YFFY-02-L
| Parameter | Specification |
| Model | YFFY-02-L |
| Light Source | LED |
| Light Color | Red |
| Luminous Intensity | Night ≥ 32.5 cd |
| Beam Angle | Horizontal 360°, Vertical ≥ 10° |
| Operating Mode | Steady On (Flashing Optional) |
| LED Lifespan | ≥ 100,000 hours |
| Battery | 3.6V / 8AH Nickel-Metal Hydride |
| Solar Panel | 3.5W / 5V |
| Light Control Threshold | 50–500 lux |
| Dimensions (Dia × H) | Φ227 × 193 mm |
| Mounting Hole Size | Φ205 × M8 (4 mounting holes) |
| Wind Resistance | Up to 240 km/h |
| Operating Temperature | -40°C to +55°C |
| Operating Humidity | ≤ 95% (non-condensing) |
| Ingress Protection | IP66 |
| Material | Housing: Aluminum Alloy; Lens: PC |
Easy Installation & Hassle-Free Operation
Whether installed on permanent infrastructure or temporary worksites, the YFFY-02-L delivers reliable warning signals to help ensure safer airspace and regulatory compliance.
Designed for fast deployment and long-term reliability, the YFFY-02-L requires minimal installation effort and virtually no routine maintenance.
Installation Guidelines of Low Intensity Obstruction Light YFFY-02-L
- Mount the light on a stable and level surface capable of supporting the fixture securely.
- If a flat mounting surface is unavailable, a customized mounting bracket can be used to suit the installation environment.
- Ensure the photocell sensor is not exposed to nearby artificial light sources and remains free from obstructions.
- Install the unit in a location with adequate direct sunlight exposure to maximize charging efficiency and operational performance.
- The integrated photocell automatically activates the light at dusk and switches it off at dawn, ensuring fully autonomous operation.

Maintenance & Safety Information
To maximize product lifespan and maintain optimal performance, please observe the following recommendations:
Battery Maintenance
- The light is equipped with rechargeable batteries. For best performance, battery replacement is recommended approximately once every 12 months.
- If the product has been stored for more than six months, place it in direct sunlight for at least three days before installation to fully recharge the battery system.
Safety Precautions
- Installation and servicing should be carried out only by qualified personnel.
- Do not open or modify any part of the fixture unless authorized to do so.
- The unit is factory-sealed for weather protection and operational reliability. Unauthorized disassembly may result in product damage and will void the warranty.
- Always follow local electrical and aviation safety regulations during installation.
Applications
Designed for Reliable Aviation Obstruction Marking
The YFFY-02-L Solar Low-Intensity Obstruction Light Type B is designed to improve the visibility of structures that may pose a hazard to aircraft. Combining dependable solar-powered performance with rugged construction, it offers a cost-effective, maintenance-friendly solution for aviation obstruction lighting.
Typical Applications of Low Intensity Obstruction Light YFFY-02-L
The Low Intensity Obstruction Light YFFY-02-L YFFY-02-L is widely used on:
- Power transmission towers and telecommunication masts
- Industrial chimneys, refineries, and chemical plants
- Wind turbines and renewable energy facilities
- High-rise buildings and architectural structures
- Airports, bridges, and port equipment
- Cranes, construction machinery, and heavy engineering equipment
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Why Choose LOW INTENSITY OBSTRUCTION YFFY-02-L?
- 24/7 Visibility: High-efficiency LED and advanced Fresnel optics ensure clear warnings for pilots in low-light or adverse weather conditions.
- Durable & Dependable: UV-resistant, impact-proof design with vibration and EMI resistance withstands the toughest environments.
- Maintenance-Free & Easy to Install: Solar-powered with Ni-MH rechargeable batteries and anti-drop safety features.
- Smart & Flexible: Selectable flashing or steady-burning modes with optional failure monitoring and alarm output.
- Extended Autonomy: Over 7 days of continuous operation even in low sunlight or rainy conditions.
Reliable Visibility. Enhanced Safety. Sustainable Performance.
Factory Gallery of Low Intensity Obstruction Light YFFY-02-L

Frequently Asked Questions (FAQ)
Q1: What types of structures require a Low-Intensity Type B obstruction light, and is the YFFY-02-L fully compliant?
A: According to ICAO Annex 14 (Volume I) and CAAC standards (MH5001-2021), Low-Intensity Type B lights are mandatory for marking obstacles less than 45 meters high that pose a hazard to aircraft, such as telecommunication masts, power transmission towers, industrial chimneys, and construction cranes. The YFFY-02-L is fully compliant, providing a steady-burning red signal with a nocturnal luminous intensity of ≥32.5 cd and a 360° horizontal beam spread to ensure maximum airspace safety.
Q2: How many continuous rainy or cloudy days can the Low Intensity Obstruction Light YFFY-02-L operate without sunlight?
A: The YFFY-02-L offers extended autonomy of over 7 days under continuous rainy, foggy, or low-sunlight conditions. This reliability is achieved through its high-efficiency 3.5W/5V solar panel paired with a robust 3.6V/8AH Nickel-Metal Hydride (Ni-MH) rechargeable battery. The integrated smart photocell automatically manages power by activating the light at dusk (50–500 lux threshold) and switching it off at dawn, optimizing energy conservation.
Q3: Can this solar aviation warning light withstand harsh marine environments and extreme weather like typhoons?
A: Yes. The YFFY-02-L is engineered for demanding industrial and coastal environments. It features a heavy-duty aluminum alloy housing and an impact-resistant, UV-resistant Polycarbonate (PC) Fresnel lens. With an IP66 ingress protection rating, it is dust-tight and highly water-resistant. Its structural design can withstand extreme wind speeds up to 240 km/h and operate reliably in temperatures ranging from -40°C to +55°C.
Q4: Is the YFFY-02-L easy to install, and what are the routine maintenance requirements?
A: The YFFY-02-L is designed for rapid deployment as a completely wireless, self-contained solar unit requiring no complex electrical wiring or external power. It can be easily mounted on any stable surface via its standard 4-hole pattern (Φ 205 x M8). Thanks to the advanced LED light source with a lifespan of ≥100,000 hours, the unit is virtually maintenance-free. For optimal long-term performance, it is recommended to check or replace the rechargeable battery approximately once every 12 months.








