1.How to explain “lumen output “ ?
The total lumens emitted of a light source, system, or solution.
2.How long do LEDs last ?
LEDs are rated by manufacturers to operate under normal conditions or 50000 hours of continuous use. As LEDs get older, they tend to dim and fade but aren’t susceptible to blinking like incandescent.
3.LEDs are more expensive than other lighting options.why ?
LEDs can operate as standalone devices,but when grouped or clustered they require additional steps to operate properly. LEDs need proper components such as a circuits can be designed rapidly, but to ensure that they operate correctly and for long periods of time they require testing.