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Peripheral Installation
External Speaker Unit (HESB) Options
12-24 Strata CTX I&M 06/04
Figure 12-23 Amplified Page/Talk-Back with HESB Interface
HESB Wall Mounting
Some applications may require that the HESB is mounted on a wall or other vertical surface.
³ To wall mount the HESB
1. Find a suitable location on the mounting
surface for the HESB (see Figure 12-24).
2. Screw a 1.25-inch panhead wood screw into
the mounting surface.
3. Hang the HESB from the screw.
123456
12V 0V
HESB (Rear View)
115VAC ± 10VAC to 12VDC
Door Phone
Internal Wiring:
TBI
4
3
TBI
7
8
9
10
Voice
4
3
4
3
2
5
HACU-120
Notes
The 600 ohm duplex page output is
compatible with most
commercially available talkback
amplifiers. – MDFB not required.
Jumpers
Voice Door Phone
12V 0V
TB2
12345678910
TB1
6 5 4 3 2 1 6 5 4 3 2 1
Modular
Connector
May Be Used
BIOU
600Ω
Page
Output
BIOU switch,
SW600must be in
the SPO position
MDF
66 Block
SPT (38, BK-GN)
SPR (13, GN-BK)
25 Pair Cable
<Duplex>
12L1 L2
Volume Control
Jumper Wires:
TB1
1-2
TB2
3-4
5-6
Jacketed Twisted
Pair 24 AWG
Jacketed
Twisted
Pair
24 AWG
MDFB (Rear View)
1 2 L1 L2
Door Phone
Talkback
Microphone
5469
Power
Converter
One Wall
Mounting
Hole
1516
Figure 12-24 HESB Wall Mounting