Apem Standard Membrane Keypads - APEM AC3533, The Apem 1 x 4 Standard Membrane Keypad with Insert Pockets is a high quality matrix keypad with four pressure pads that have outlines and symbols printed on a flat, flexible surface.
The clear windows have a silver perimeter embossing a silver unembossed border on a black background, while two inserts with black graphics on a silver background are also supplied.
APEM AC3533 Standard Membrane Keypad 1x4 with Insert Pockets