Potter EVD-M controller - Master unit, same as EVD-1 but expandable
EVD-M CONTROLLER The EVD-M controller detects short duration, large
amplitude signals like those produced in attacks from explosions,
hammering or chiseling. It also detects long duration, small amplitude
signals like those produced in attacks from torches, thermic lances,
drills, grinders or cutting discs. As soon as the EVD-M detects a large
amplitude alarm source it signals an alarm.
The EVD-M controller supports up to 15 EVD-R remote pickups, (or may be
used as a stand alone unit), and fully supervises EVDR wiring.