Why is the floor brush light blue?

Short-wavelength blue light has a higher refractive index for grease and wet dirt, making it easier to clearly see the edges of uncleaned stains. During extended cleaning sessions (such as whole-home mopping), blue light also has a cooler color temperature that helps reduce visual fatigue.

In comparison, green light highlights dry dust—it's like using a flashlight to spot sand on the floor. Blue light, on the other hand, highlights wet stains and water marks—it's more like a searchlight for detecting water residue. Since floor washers are primarily dealing with water marks, grease films, and wet grime, we chose blue light for optimal visibility and cleaning precision.