Aiphone DL-10 - Manual (Page 3)

HOW то ADD ТА К Type A TO EXISTING SYSTEM WHEREBY INSTALLED OLD TA-K
The following two diagrams show wiring connection of TA-K Type A mixed with old TA-K. If you install newly
AIPHONE Apartment House Intercom System, please order all TA-K Type A apartment telephone and refer to the wiring
diagram on Page 3 of this manual.
Example 1
DL-6
Three TA-K Type A added to existii^ system without door release.
Separate Bell Transformer (AC-12V) is required to power AC call buzzer on old TA-K.
Example 2 : Three TA-K Type A added to existing system with door release.
DL-6
Separate Bell Transformer (AC-12V) is required to power both call tone and EL-9S electric door release.
NOTE: Call tone quality will be spoiled if AC-12V is supplied from0and(b)terminals on PS-2S. So we recommend
you to have separate Bell Transformer in above examples.