A mixed installation uses both AH15 and AH30 communication hubs with the address range from 1 to 63, according to this figure:
Mixed installation
In the address range 1-15, AH30 communication hubs can be used to pair several locks. In the address range 16-63 only AH15 or AH30 communication hubs in single device mode can be used to pair with only one lock. Some of these locks create possible address conflicts: 0x11, 0x21 and 0x13. These conflicts are simply avoided by selecting the closest “free” address, in this case 0x12.