... -9m sensor distance IP65 waterproof rechargeable led emergency light, more than 90 LM/W Description:LED Emergency Microwave sensor light is a ... function products:1. the light are LED light source, 3528LED with high Luminous efficiency, more than 90 LM/W.lower heat generation, ... as 50000hours for LED.2. Emergency function, Li battery inside, make sure the duration time is more than 4hours in emergency ...