RISCO Group ProSYS Version 7.xx - Manual (Page 4)

4 ProSYS Version 7.XX - Supplementary Instructions
The following figure illustrates all types of termination with the new resistor values
that should be used for zone connections on the main board, new zone
expanders and relay inputs on iWISE Bus zones.
Important Note:
For all existing 8 and 16 hardwired zone expanders, the resistor values remain 2.2K ȍ
(resistors supplied with the product).