BP Lighting Sian is an innovation in LED high bay lighting. Sian LED is a very effective IP65 LED luminaire with a luminous flux of up to 30000 lumens. It is ideal as lighting in industrial and warehouse applications. The luminaire is easy to install and is delivered with an eyelet for chain or wire suspension. Sian LED has excellent color rendering with a CRI of over 80. Emergency versions with built-in battery for 3 hours. Among the accessories are lenses for different beam angles.