Grayhill 87HC3-201, Insertable legend 6 button module with PCB mounting and Snap Dome contact.
Standard insertable legend modules are an economical way to create your own keyboard legend. Just remove the clear button cap, add any legend, and replace the snap-on cap.
Grayhill 96AB2-152-R, Keypad with 12 (3x4) buttons, matrix code circuitry, white legends on a black button, rear panel mount.
The contact system utilizes conductive rubber to mate the appropriate PC board traces.