YSL2000 solar aviation obstruction light use a unique constant current method has accurate constant current, ultra high efficiency at the same time the flicker frequency adjustable, Steady-burning or flashing is adjustable intensity is adjustable, adjustable (open after the lampshade can be adjusted) 485 synchronous or wireless synchronization can be customized . YSL2000 is the self-contained and care-free light unit. Also, with the solar function, the light is easy to deploy to almost any condition and any emer- gency case. Robust body built and surface coating provides good protection against hash environments.YSL2000 obstruction light is equipped with an high-efficiency rechargeable battery which could power the light up to 20 days when the weather is cloudy & rainy. The rechargeable battery is also easy to find almost anywhere.