FARFISA INTERCOMS FT 105P Installation, Programming, And User's Manual page 40

FT
105P
208P
I
N
T
E
R
C
O
M
S
TERMINAL SPECIFICATIONS OF THE INTERCOM CARDS
1 audio to external station (transmission)
2 audio from external station (reception)
3 ground
4 common conductor for relay 1 exchange. The terminal is grounded;
to disconnect it, cut the jumper W1
5 relay 1 exchange normally open (max 1A)
6a intercom call no. 1 (12 Vac – 150 mA)
6b intercom call no. 2 (12 Vac – 150 mA)
C2 common for relay 2
NA2 relay 2 exchange normally open (max 1A)
NC2 relay 2 exchange normally closed (max 1A)
C3 common for relay 3
NA3 relay 3 exchange normally open (max 1A)
NC3 relay 3 exchange normally closed (max 1A)
C4 common for relay 4
NA4 relay 4 exchange normally open (max 1A)
NC4 relay exchange 4 normally closed (max 1A)
3 8
Terminals only
available on the
ES65 intercom
card.