Product Range > Master Clocks/Control Units > master clocks/signalling master clocks

 master clocks/signalling master clocks

Enlarge picture
Type series 921
on-wall mounting
1, 2 or 4 clock lines,
0, 2 or 4 signal contacts,
with or without power
outage reserve
PDF PDF download
Enlarge picture
Type series 921
19" rack mounting
2 or 4 clock lines,
0, 2 or 4 signal contacts,
with power outage reserve
PDF PDF download