346992

Expansion module for connecting more than 8 call keys to item 346991 - max. 6 modules (56 calls max.) with power supply 346000 / 346050. Max 2 modules (24 calls max.) with audio power supply 346040.
Expansion module for connecting more than 8 call keys to item 346991 - max. 6 modules (56 calls max.) with power supply 346000 / 346050. Max 2 modules (24 calls max.) with audio power supply 346040.