VA NDA L RESISTA NT
BA CK-LIT WEATHERPROOF
DIGITA L A CCESS CONTROL KEYPA D
D C6 0 SS, D C5 0 SS & D C5 0 FS
Pr o g r am m i n g & In st all at io n M an u al
FOR ELECTRIC LOCK, INTER-LOCK
AND SECURITY SYSTEM INSTALLATIONS
APPENDIX
DRY CONTACT
A dry contact means that no electricity is connected to it. It is prepared for free connections. The Relay Output
contacts provided in this keypad system are dry contacts.
N.C.
Normally Closed, the contact is closed circuit at normal status. It is open circuit when active.
N.O.
Normally Open, the contact is open circuit at normal status. It is closed circuit when active.
TRANSISTOR OPEN COLLECTOR OUTPUT
An open collector output is equivalent to a Normally Open (N.O.) contact referring to ground similar to a relay
contact referring to ground. The transistor is normally OFF, and its output switches to ground (-) when active.
The open collector can only provide switching function for small power but it is usually good enough for
controlling of an alarm system. The Duress, Inter-lock and Key Active Outputs of the keypad are open collector
outputs.
OPENCOLLECTOR
OUTPUT ----
Output switches to
ground when activates
N.O. CONTACT
OUTPUT ----
Output switches to
ground when activates
EQUIVALENT
VERSION: 11/09
