8
290A3693
BLK
WHT
BLK
WHT
AUDIO LINE
TO OTHER INTERCOMS
1K
1W
ATT
AUDIO CABLE
REMOTE A
REMOTE B
AUDIO CABLE
1
3
2
1
3
2
4
BLK WHT GRN
*
SEE POWER CONNECTIONS
*
BLK WHT GRN
*
Reminders:
•
Befor
e installing r
emote inter
coms, pr
ecautions should be taken to pr
event feedback
between two or mor
e r
emotes in close pr
oximity and acoustically r
eflective ar
eas.
•
16–20 gauge low voltage audio cable. T
wisted pair not r
equir
ed.
•
Shielded audio cable not r
equir
ed unless operating in high electr
omagnetic fields.
Gr
ound one end of the shield to earth gr
ound.
•
Type of power cable depends on inter
com model.
•
7 foot pr
ovided for audio and power
.
Operating Principle:
•
When one talks, all inter
coms will hear
.
•
To talk to other stations, pr
ess the talk/listen
switch and speak into the speaker/micr
o‑
phone.
Release talk switch to listen.
NOTES:
1.
Speaker/Micr
ophone
2.
Of
f/On/Speaker V
olume Contr
ol
3.
T
alk/Listen Switch
4.
“Call” T
one Switch
Power
Remote A
Remote B
12–18V
DC
AD
‑26
AD
‑26A
120V 50/60 Hz
AD
‑27
AD
‑27A
22
‑30V
DC
AD
‑56
AD
‑56A
240V 50/60 Hz
AD
‑57
AD
‑57A
POWER CONNECTIONS:
BLK
+DC Power
12/24V models
HOT
120/240V
WHT
Common
12/24V models
Neutral
120/240V models
GRN
Earth Gr
ound
120/240V models only
1