Keyscan Inc. – Technical Guide (PC109x - 07.15)
Shield
D1 (White)
D0 (Green)
GND (Black)
LED (Orange)
PWR (Red)
Reader terminal on control board
LED D1
WHT
D0
GRN
PWR
RED
GND
BLK
C1
(BEEP)
Pre-alert
(Yellow)
ACU Ground
Lug
Shield not connected.
Isolate with electrical tape.
6 conductors
shielded 22 AWG
Maximum - 500 ft
(152.4 m)
LED (Orange)
D1 (White)
D0 (Green)
PWR (Red)
GND (Black)
Pre-alert (Yellow)
Yellow (Beeper) used for pre-
alert otherwise isolate and
tape back.
If connecting external sound
device, see Pre-Alert Relay
Option or refer to ACU cut
sheet enclosed with panel for
ACU/OCB8 relay
assignments.
Isolate and tape back
unused conductors.
Shield not connected.
Isolate with electrical tape.
KI-00511E-10-13
1 2 3
4
5
6
7 8 9
*
0
#
Versions
- KRK40L
- KRK40SE
- KRPK40L
- RK40HGOV
- RPK40GOV
Note - If Pre-alert is
connected, SE multiclass
reader may not transmit
HID 125 kHz-compatible
card during the pre-alert
beep.