8
2
Power Connections:
"PWR+" (Black)
+DC-Power
12/24V Models
"PWR-" (White)
Common
12/24V Models
POWER
PRIMARY
12-18VDC
AD-26-8-M44P
22-30VDC
AD-56-8-M44P
NOTES:
1. Mounting Holes
2. Talk/Listen Switch
3. Primary Off/On/Speaker Volume Control
4 Remote Secondary Speaker Volume Control
5. Cover Plate
6. On some installations, use shielded cable if
electrical noise is picked up.
OPERATING PRINCIPLE:
• Remote Secondary station is both a
speaker and a microphone.
• Primary is normally in "Listen" mode
until the talk button is pressed to talk to
Remote Secondary.
• Outgoing and incoming volumes are
controlled by separate controls on
Primary.
290A3828-02
"SPK" SPEAKER
(WHT/BRN)
LOCAL SPEAKER/MICROPHONE
MODEL AD-SF-25
PRIMARY
PANEL MOUNTED
INTERCOM
"COM"
COMMON
(WHT)
2
5
6
BLK
WHT
BLK
WHT
"REM SPK"
REMOTE
SPEAKER
(BLK)
"COM"
COMMON
(WHT)
200 FT. MAX.
AD-SF-25/AD-SS-25
"PWR
+
"
(BLK)
*
SEE POWER
CONNECTIONS
*
"PWR
-
" (WHT)
1
1K
1WATT
3
4
REMOTE SECONDARY SPEAKER
