Link CAN Keypad 15 Button + 2 Rotary EncodersRugged 15 button CAN Keypad with interchangeable 15mm inserts (sold separately). Two rotary encoders with 16 Blue indicator LEDs each. Four additional analog inputs allow additional sensors switches to directly connect to the CAN Bus network through the keypad. The compact layout and inclusion of the rotary encoders and analog inputs allow for significant dash space saving while massively expanding functionality. See features tab for more info Box