This telephone style keypad has many uses. From hobbyists to security situations. It has 0-9, asterix, # - 3 x 4 way matrix.Specifications:Contact rating: 20mA, 24VDCContact resistance: 200maxLife: 1,000,000 cycles per keyContact: Conductive rubberSize (Key Face): 44(W) x 54(H) x 5(D)mmColour: White keys on black background