Many salespeople may be misleading by providing some vague information to customers for some reason when selling LED wall washers. For example, a wall washer has a lifespan of about 100,000 hours, where 100,000 hours refers to the manufacturer's expected lifespan for a wall washer. However, as a light source for lighting, the brightness of lamps has a gradual decay and dimming process (such as fluorescent lamps and energy-saving lamps), which is referred to as light decay.

Therefore, when buying a wall washer, consumers should pay attention to its light decay speed, not its use time. Consumers should not have high expectations for actual lifespan. The concept of electricity was introduced from the amount of work done by the force at the same time. If the current works fast, the electrical power will be large; if the current works slowly, the electrical power will be small, or the more the current does work at the same time, the greater the electrical power. For the wall washer, the higher the power, the higher the brightness. Taking the three-lamp red wall washer as an example, when the axial brightness is 1200mcd, the current is 40ma, and the power is 0.48W; under the same brightness, the three-lamp white wall washer, the current is 18ma, and the power is only 0.24W; you can see The power of the two lights at the same brightness is different. Therefore, consumers should pay attention to the axial brightness rather than the power when purchasing the wall washer.