ABB Welcome IP IPTouch 7 Series Product Manual page 73

[2] Location = External
The 2nd OS is connected to the switch outside the apartment (see diagram below).
Block no. range is 1...999, the Room no. range is 01...63 + 01...32 (e.g. 0101), and the device
no. range is 1...2.
Note
The external and internal types cannot be used in mixed scenarios in the same
apartment.
Product manual 2TMD041900D0001
Commissioning
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