... , corrosion-resistance, shockproof area), large-scale port machinery(tyre crane, crawler crane, gantry cranes, bridge crane, etc) wind turbine (nacelle, tower Drum, wheel hub ... ~ 60HzPower8WLED Lifetime≥100,000hBattery7.2V, 1500 mAH Ni-H batteryEmergency operation90 minIllumination Intensity120lux(H=1m)Diffusion angle1700Work styleAuto emergency operation. External switch ...