Alphatech A-VarioBell User And Service Manual page 20

Modules numbering is on the picture. In left part are modules with 5 buttons
VBD5-mod and in right part are modules with 10 buttons VBD10-mod.
Module with desired numbering you find on this picture and on the left is
DIP switch combination (6) which you have to setup on this module.
Numbering not depends on mutual modules connection by K1 cables
When you connect to system 2 button modules with the same DIP switch
setting nothing will happen. However both those modules will have same
buttons number and due this same functionality.
Keypad module does not need any setting
When you connect 2 keypads into system then both will work the same
way.
A-VarioBell – User and service manual
20