electric numeric keypad, custom waterproof membrane keypad

An electric numeric keypad should provide distinct number targets while its membrane base remains correctly retained. Custom silicone geometry needs to follow the housing and internal contact arrangement. Where the device requires water protection, the perimeter and other enclosure interfaces should be developed as a complete system.

Check entry sequences across rows and columns after assembly. The faces need clearance from neighboring keys and the housing, while supports beneath the mat keep it from shifting. The retained edge should not restrict the sections intended to move.

Fit on clean seating surfaces and inspect the perimeter for folds before fastening the case. Evaluate operation and the complete device's intended protection conditions rather than attributing a rating to the keypad alone. Select identification suited to the actual faces and cleaning process. During servicing, restore the original locating and support arrangement, then check the full numeric sequence so that a local seating change does not affect several controls at once.

Material options

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

Hardness selection

Silicone: 20–80 Shore A. Set numeric-key firmness around the required travel and enclosure support; evaluate water protection through the complete perimeter construction separately.

Custom dimensions

The faces need clearance from neighboring keys and the housing, while supports beneath the mat keep it from shifting.

Fit & assembly

Fit on clean seating surfaces and inspect the perimeter for folds before fastening the case.

Use & inspection

During servicing, restore the original locating and support arrangement, then check the full numeric sequence so that a local seating change does not affect several controls at once.

Photos illustrate structure or material only. Where the device requires water protection, the perimeter and other enclosure interfaces should be developed as a complete system. ETOL directly manufactures custom-shaped silicone and rubber parts to your requirements.