Dark Crystal MIFARE Readers
4231 UID, 4270 Classic, 4825 DESFire
These MIFARE readers for use with the P4 & C4 access control
systems. The reader is intended for indoor or outdoor use
This reader range uses a simple 4 wire interface for all power, data
and signalling between Controller and Reader.
P4 Controllers (Firmware V4.5 +) and Doors Enterprise (V8 +) both
support the following additional features:
•
Alarm Volume Control (Engineers functions 33 & 35)
•
Feedback Sound Volume Control (Engineers functions 32 &
34)
•
Running Light Brightness Control (Engineers functions 58 & 78)
Installation
The reader can be fitted directly to a standard UK light switch back box (with 60mm fixing centres). It
is supplied with M3.5 screws for this purpose.
It may also be surface mounted: Drill a 6mm hole at the centre point of the mounting position for the
cable. The two mounting holes are 30mm horizontally left and right of this hole. Drill and plug the wall
for the screws being used. Make a 10mm deep rebate for the speaker at the back of the reader. Feed
the cable through the 6mm hole and connect to the reader terminal block. Secure the reader with two
screws.
Always use a screened cable (4 core 7/0.2 non-twisted) and connect the screen to earth at the
controller. The maximum cable length is 100m.
CONNECTION TABLE
Cable Core
Red
Black
White
Green
Screen
PRODUCT SPECIFICATION
Parameter
Operating Voltage
Peak Current
Average Current
Cable Distance to Controller
Dimensions
P4 Controller
C2 Controller
+
-
X
Y
Earth
Minimum
8.0 V DC
+12V
0V
X
Y
Earth
-
-
-
Maximum
14.0 V DC
100 mA
50 mA
100 m
W 90, H 90 D 19 (mm)
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