3d printed sensor housing

A close-up, photorealistic product render of a functional medical prototype designed to be clipped onto standard inhalers. The accessory is a "ventilated housing" designed to look 3D-printed using matte white PLA or PETG filament, with visible print layer lines. The housing features a distinct "clip-on" mechanism that grips the inhaler's plastic boot. The focal point is the front face, which features a "transparent window" made of optical-grade film, held in place by small mechanical screws. Behind this clear window is a "colorimetric sensor array" on a texture-rich white chromatography paper substrate. The paper displays a grid of distinct chemical indicator dots in varying reaction colors—specifically referencing pH-sensitive dyes (like Bromothymol blue and Methyl red) and redox indicators, appearing as spots of deep yellow, blue, red, and orange. The sides of the device have engineered "ventilation slots" to guide airflow over the paper. The design is strictly non-el