@CleanAirStars @eswillwalker @JimRosenthal4 Some of them have an indicator light (which is probably ignored a lot in practice). With a CR box the dust catcher would be on the outside and clearly visible. But of course, still could be ignored.
@CleanAirStars @eswillwalker @JimRosenthal4 其中一些有指示灯（在实践中可能被忽略了很多）。使用 CR 盒时，除尘器将在外面并且清晰可见。但当然，仍然可以忽略。