Key points in this article
Read Them Once, Properly
Status lights only help if their meaning is known. A single clear legend, learned once, beats repeated calls asking what a blink means. Misread lights cause needless stops and needless worry alike, because the user invents a meaning the engineer never intended for that pattern.
Tie To Habit
Make a glance at the light part of the start and end routine. A user who reads the indicator naturally catches anomalies early, which quietly protects long-term reliability more than any spec, because the early catch is what prevents the small fault from becoming the big outage.
Write The Meaning
Dongshang New Energy keeps indicator meanings posted and consistent, because a light whose meaning drifts becomes noise, and noise is ignored exactly when it should be heeded most during the slow build toward a real failure.
An indicator is a sentence in a language the user must speak. Teach it once, post it plainly, and the light becomes a friend; let it drift, and it becomes the boy who cried wolf at the worst possible moment.