Instructions

66
Connection Terminal
AR-2802 and AR-2807 AR-2806
10987654321
LED
DATA
I/O
TAMPER
N.C.
( + ) ( – )
12-24V DC
WIEGAND
D0 D1
BUZ
RS
232
Version "A" ONLY
654321
LED
DATA
I/O
TAMPER
N.C.
( + ) ( – )
12-24V DC
10987
WIEGAND
D0 D1
BUZ
RS
232
Version "A" ONLY
41. AUXILIARY INFORMATION
• 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/Alarm Outputs of the keypad are open collector outputs.
OPEN COLLECTOR
OUTPUT ----
Output switches to
ground when activated
EQUIVALENT
N.O. CONTACT
OUTPUT ----
Output switches to
ground when activated