Choosing the high efficiency LED lamp

In the past year we use incandescent lamps, 60 wattage incandescent lamp brightness higher than 40Watt, so in ordinary consciousness higher wattage means higher brightness. Today, we need to change our mind on brightness, consider to measurement brightness in lumens. Same wattage, higher lumen output is better. For example: Different branded LED bulb same 80Watt.
In the market, some manufacturer producing 80W LED corn lamp, lumen output 6800lm, but another factory 80W LED corn light lumen output up to 10500lm. Obviously, that 80W LED bulb with 10500lm are more efficient than 6800lm.
Buy a fewer watts to get a same lumen output. For example, if you want to replacement your 250W high pressure sodium lamp in your warehouse, choosing 60Watt with a 7200lm output rather than a 80W with 6800lm. Saving money on electricity bill in a long run.

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