Tone Selection - AB Quality 855H Series Bulletin

ACCESS TO PCB'S FOR PROGRAMMING AND POWER CONNECTIONS
DC UNITS
4.5 lb-in
(0.5 N•m)
(4 places)
DC UNITS:
Remove 4 screws on face of unit for access to DC
power connections and programming functions on Main PCB,
and for stage selection connections.
Re-torque as indicated after set-up to
maintain ingress rating.
INSTALLATION & WIRING REQUIREMENTS:
The power terminals on the control unit are clearly marked and will accept up to AWG 16 (1.5mm²) wire size.
DC Terminals on Main PCB.
S4 S3 S2 + +

TONE SELECTION

The 855H Recordable Horn has 45 different tones (See page 12) that can be selected for the first stage alarm. The
unit can then be switched to sound second, third and fourth stage alarm tones. The tones are selected by
operation of DIP switch S4 on the main PCB.
The tone selection table (page 12) shows the switch positions for the 45 tones and which tones are available for the
second, third and fourth stages.
Example
S4 Dip Switch -
Shown Set for Tone 1
(All switches OFF)
See Quick Start Guide (beginning on page 6) for set-up instructions and functions.
++ = Positive
- - = Negative
- -
AC UNITS
AC UNITS:
1. Remove 4 screws on face of unit to connect DC power
for programming functions on Main PCB
2. Remove 2 screws on top connection box to access AC power
connections on Sub PCB and to wire stage selection.
(after programming is completed on Main PCB)
3. Re-torque as indicated after set-up to
maintain ingress rating.
AC Terminals on Sub PCB.
(AC units only)
L = Line
N = Neutral
= Ground
2
4.5 lb-in
(0.5 N•m)
(2 places)
4.5 lb-in
(0.5 N•m)
(4 places)
L S2
N
S3
S4