1.How to explain “lumen output “ ?
The total lumens emitted of a light source, system, or solution.
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.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.Toppo Lighting is one of the leading toppo panel mount led indicator lamps manufacturers and suppliers in China, which is equipped with a productive factory. Welcome to import the newest toppo panel mount led indicator lamps at competitive price with us. We can also offer you customized service.