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ICAO Annex 14 Medium Intensity >2000 Cd 48V / 24V DC IP65 LED Technology

Medium Intensity Type B Aviation Obstruction Light — DC Powered

ICAO-compliant medium intensity red flashing LED aviation obstruction light for telecom towers and tall structures. Operates directly on 48V DC or 24V DC tower supply — no separate AC power source required.

SSSL-MB-D48V DC input SSSL-MB-24D24V DC input
Medium Intensity Type B 48V DC Aviation Obstruction Light by Spaceage Security Systems Ltd.

Technical Specifications

Optical & Electrical
Product CodesSSSL-MB-D (48V DC) / SSSL-MB-24D (24V DC)
Type of LightLED Light
Supply Voltage48V DC ±10% (SSSL-MB-D) or 24V DC ±10% (SSSL-MB-24D)
Light Intensity>2000 Candelas (Cd)
ICAO ComplianceMedium Intensity Type B — ICAO Annex 14
Light Source480 high-power LEDs from reputed sources
LED ColourRed
LED Life50,000 Hours
LED Clusters in Parallel120 parallel circuits
Power Consumption30W Peak, 15W Average
Power Factor>0.95
FlashingYes
Flashing Frequency20–60 flashes per minute
Inbuilt Photo SensorYes — auto ON/OFF based on ambient light
Light Spread360° horizontal — as per ICAO norms
Physical & Environmental
Dome MaterialClear glass dome (does not deteriorate like plastics)
Base MaterialHigh-grade cast aluminium
FinishOrange epoxy powder coated on aluminium base
Environmental ProtectionIP65
Bird SpikeYes, built-in
Operating Temperature-10°C to +60°C
MountingDrill/weld-free mounting arrangement provided
DC Advantage: Connects directly to the tower's existing 48V or 24V DC supply — remains operational during AC mains failures as long as site battery backup is available.

Applications

Ideal for any tall structure where DC power is the primary supply source.

Telecom Towers

Connects directly to 48V DC BTS rectified supply — no additional converter required.

Wind Turbines

Marks tall wind energy structures as per aviation authority requirements.

Tall Buildings & Chimneys

Required by DGCA and ICAO on structures exceeding 150m height near airports.

Power Transmission Towers

Provides aerial visibility on high-voltage transmission line pylons in flight paths.

Frequently Asked Questions

A Medium Intensity Type B aviation obstruction light is an ICAO Annex 14-compliant red flashing LED light with a minimum intensity of 2000 candelas. It is used on tall structures such as telecom towers and wind turbines to warn low-flying aircraft. The DC-powered variant (48V or 24V DC) is ideal for telecom tower installations where a DC power supply is already available.

The SSSL-MB-D is designed for 48V DC supply (±10%), while the SSSL-MB-24D is designed for 24V DC supply (±10%). Both models are otherwise identical in performance: >2000 Cd light intensity, 480 LEDs, 50,000hr LED life, 30W peak power, IP65 rating, and ICAO Annex 14 Medium Intensity Type B compliance.

Telecom towers operate on 48V DC rectified power, making DC-powered aviation lights a natural fit — no separate AC power supply or inverter is required. The Spaceage SSSL-MB-D connects directly to the tower's DC bus, reducing installation complexity and ensuring the aviation light remains operational even during AC mains failures, as long as the site battery backup is available.

Related Products

Medium Intensity Type B — 230V AC

Same medium intensity light for 180–250V AC mains supply. Model SSSL-MB-A.
Medium Intensity — With Fault Monitoring

Dual voltage (48V DC + 230V AC) with automatic fault detection and alarm panel.
Low Intensity Type B — 48V DC

Low intensity variant for structures up to 150m. >32 Cd, 108 LEDs, 48V DC.

Request a Quote for SSSL-MB-D / SSSL-MB-24D

Need ICAO-compliant DC aviation lighting for your tower sites? Contact our team for specifications, pricing, and installation guidance.

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Note: Due to continuous improvements, Spaceage Security Systems Ltd. reserves the right to modify specifications without prior notice.