Page 43 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring
2-Wire Reverse Polarity Minute Impulse (59th Minute)
AB
PC
YEL / WHT
GRND
AC IN
AC RTN
BLK
BLK
VIO / WHT
H
M
24VDC
From
Master Cloc
k
115VAC
Local
Powe
r
To
Other Clocks
Clock must be set within 20 minutes of actual time
for master to synchronize. Use of a 9Volt alkaline
battery is recommended to avoid resets after power
failures.
678
Set switches 1-5 of S1 as shown.
Indicates depressed side of switch
OPEN
123 4 5