DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 34
National Synchronous Wired
To
Other Clocks
115VAC
From
Master Clock
O
P
E
N
1
2
3
4
5
6
7
8
Set switches 1-5 of S1 as shown.
Indicates depressed side of switch
H
M
For 24VAC correction, use wiring
shown on page 23
BLU / WHT
Run
Correction
BRN / WHT
BLK
BLK
AC Return
Clock will correct minutes hourly at HH:00 and
hour and minutes twice daily at 6:00.