Light-admitting molded silicone keypad buttons with radium carving

Light-admitting silicone keypad buttons should be developed with the illumination arrangement behind them. The engraved legend, molded material and surrounding housing all influence how the user sees the key in the finished control.

ETOL can customize shape, dimensions, color and identification features. Position each legend within the visible key area and align it with the intended light path. A feature centered on a loose button can appear unevenly lit if the light source or support shadows part of it after assembly.

Inspect the control with its intended illumination active and inactive. Check readability from the normal viewing angle, then assess the button's mechanical movement and circuit response separately. Light transmission does not establish correct contact alignment or unobstructed key travel.

Compare neighboring keys under the same conditions, including the areas closest to the housing perimeter. A support rib or a different distance from the light source may change their appearance. Address the optical layout and key construction together rather than changing the legend alone to compensate for an obstruction beneath it.

Keep the underside and visible face clean during fitting so residue does not alter appearance or contact. Avoid scratching the engraved region with assembly tools. If the layout changes, repeat the optical assessment with the revised housing and lighting positions rather than judging a replacement key in isolation. During service, use compatible cleaning methods and correct any panel edge that rubs the surface before fitting a new molded component.

Material options

Silicone. Custom formulation and color for the intended contact conditions.

Hardness selection

Silicone: 20–80 Shore A. Check readability from the normal viewing angle, then assess the button's mechanical movement and circuit response separately.

Custom dimensions

ETOL can customize shape, dimensions, color and identification features.

Fit & assembly

A feature centered on a loose button can appear unevenly lit if the light source or support shadows part of it after assembly.

Use & inspection

During service, use compatible cleaning methods and correct any panel edge that rubs the surface before fitting a new molded component.

Photos illustrate structure or material only. Address the optical layout and key construction together rather than changing the legend alone to compensate for an obstruction beneath it. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.