Idoor Extension Kit (Uno-148-Id1Ea) - Advantech UNO-148 User Manual

9. Return the back cover and gently screw it into place.
3.7.2

iDoor Extension Kit (UNO-148-ID1EA)

You can additionally install 2nd stack iDoor extension kit (PN: UNO-148-ID1EA) on
UNO-148 to expand its functionality:
The accessory list for iDoor extension kit (PN: UNO-148-ID1EA)
5 x M3x4L screws for extension kit installation
UNO-148 User Manual 42