Configuration manual for 2N IP intercoms 5. Intercom Configuration 5.5 Hardware Here is what you can find in this section: 5.5.1 Switches5.5.2 Audio5.5.3 Camera5.5.4 Keypad5.5.5 Backlight5.5.6 Display5.5.6.1 2N IP Style Display5.5.7 Card Reader5.5.8 Digital Inputs5.5.9 Extenders5.5.10 Lift Control