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Note

  • If there are 32 IM in one BDU zone, need to use the Power supply-PC7H

  • Support one door station only ( new branch will issue soon)

  • IM in one DBU zone: Normal IM Max.32, DX Max.8, DT47MG Max.12

  • Upgraded DT821/VD, DT821/M4, BDU are required for the above application

Call codes setting

Use the DIP on the back of each 821-M4 module to define the room number address of the key call, regardless of the installation location and order of the M4 module
The rules are as follows:

Image Added
Info

The last two bits of DIP do not need to be set, and the default is OFF