1
1.
2.
3.
4.
5.
6.
7.
Microphone
10 segments level meter display
zone selection button
paging button
all zone selection button
power indicator
chime button
8.
9.
10.
11.
12.
13.
14.
power switching
DC 24V input interface
LINK online interface
chime volume control adjustment
MIC volume control adjustment
Master volume control adjustment
Chime times selection switch
4
3. NOMENCLATURE AND FUNCTIONS
3.1 FRONT PANEL
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ALL CALL
POWER
CHIME
TALK
OUTPUT LEVEL
MIC
-18 -15 -12
-9
-6
-3
0
+3
+6 +9
dB
2
3
5
4
6
7
ON
OFF
CHIME VOL.
MASTER VOL.
MIC VOL.
CHIME
2 TONE
4 TONE
LINK
24V
2A
POWER
8
9
10
11
12
13
14
3.2 REAR PANEL
Summary of Contents for T-4012
Page 11: ...9 6 BLOCK DIAGRAM...