RED/GREEN
LED INDICATOR
for a clear status display (inactive/active).
MAKE CONTACT
(NO – Normally Open)
A make contact is a contact that is normally open.
No current flows as long as it is not activated.
When the key (or switch) is operated, the contact closes and current can flow.
BREAK CONTACT
(NC – Normally Closed)
A break contact is a contact that is normally closed.
Current does flow as long as it is not activated.
When the key (or switch) is operated, the contact opens and the current is interrupted.
TAMPER BOARD
A tamper board (tamper circuit) is an additional security module that detects when someone tries to open, loosen, or manipulate the key switch.