4500-103 USB 2.0 Keypad Encoder, Drives and Controls for Keypads with Illumination 3K041203 3000 Series, 4-Key, Arrows 3K042203 3000 Series, 4-Key, F-14 3K120203 3000 Series, 12-Key, Calculator 3K12T203 3000 Series, 12-Key, Telephone 3K160203 3000 Series, 16-Key, Calculator 3K16T203 ...