Main Pcb Layout - AB Quality 855H Series Bulletin

S2 - Set-up
Master/Slave
Connector
ON
Jumpers

MAIN PCB LAYOUT

S4 - Tones
2 3 4 5 6 7
1
ACTION
RESET
TA R/E RA
SYNC
OFF
S/M
ON
ME
MAX
MIN
Alarm Tone & (Voice) Recorded Content
Volume Controls
Power & Alarm Stage Terminals for DC units
(Also for DC Power to program AC units)
Beacon pre-wired to '+' and '-'
(DC combo units only)
+ +
S4 S3 S2 - -
ON
PEAK
MIC
LINE IN
5
Function LEDs
Peak level LED
On board microphone
Audio Line-in Jack (J3)