... LED, low light attenuation;5. Isolated constant current power supply, security and stability. Technical parameter: Testing conditions ... Input voltage: AC100-240V 50/60HZCCT: White(5000-7000K)Power: 18WLuminous flux: 1440LMPower factor: 0.8Beam angle: 90degPower ... desk lamp lighting and stair lighting2.Apply to municipal lighting, bank, infrastructure, gym, airport, cinema, industrial facility, public ...