LED indicator switch. When turned off, it has a flashing effect. Is it a replacement for the light or the switch?

In recent years, LED indicator switches have developed rapidly in the market, providing consumers with a very good product experience. However, during sales, complaints are occasionally heard, indicating that for some LED lights controlled by the LED indicator switch, there is still a faint flickering phenomenon after being turned off. Should one replace the light or the switch? 

After our inspection and testing, we found that this phenomenon is not caused by the switch itself. Even when the switch with an LED indicator light is turned off, there is an overcurrent phenomenon, but the current is extremely small, only about 20 to 30 microamperes (one microampere is equal to one millionth of an ampere), which is almost equivalent to static electricity. Under normal circumstances, whether it is a fluorescent light source or an LED light source, turning off them will not cause flickering. Therefore, the above situation occurred, the problem actually lies in the power supply used by the LED light. 

At present, the power supplies used for LED lights mainly include two types: one is isolated power supply, and the other is non-isolated power supply. Although the non-isolated power supply has a lower cost, it has significant risks in terms of product lifespan and safety performance. Due to the increasingly fierce competition in the LED lighting market, price has become a key competitive factor. Not only small factories with inferior brands, but also some large lighting brands have relaxed their quality requirements for costs, and even some influential lighting brands have also exhibited such phenomena in some of their products. 

In such situations, I believe there are at least two things that can be done: First, regarding the attitude, when such complaints arise, should the light be replaced or the switch? Our attitude is that the light must be replaced, regardless of the brand. It's good if it's good, and bad if it's bad. We cannot allow inferior products to drive out superior ones. Secondly, efforts should be made to promote the establishment of national standards for related products as soon as possible, exposing the problems to the public, so that the LED lighting industry can develop more smoothly and in a more regulated manner.