About – K series stainless steel keypads are for use with Switch2 and Net2 systems. The keypad has a robust metal construction. K series stainless steel are available in three sizes. Installation – The keypad is wired as shown on the control unit label. The cable exits centrally from the back of the keypad making drilling and mounting very accurate. Operation – A code is entered using the keypad. The control unit checks the validity of the code and grants or denies access as appropriate.