1.What’s Smart Lighting ?
Automated lighting control using sensors and /or scheduling switches.
2.What’s efficacy about the light ?
The light output of a light source divided by the total electrical power input to that source, expressed in lumens per watt(lm/w).
3.What’s Watt ?
The unit of electrical power as used by an electrical device during its operation. Many lamps come with rating in watts to indicate their power consumption.