MR-1824HiLo/MC Installation Sheet
Version 2.2 / Doc# 041509
Page 2 of 3
4.
Wire Connections
– Connect the “HiLo” units’ wires to the cables for power, data, and controls.
a. Start the wiring by connecting together these corresponding wires (same insulation color) on the two reader units:
3 Wiegand data lines –
green
,
white
and
black
.
1 or 2 external control lines –
brown
for LED,
yellow
for beeper/alarm, if they are used. (Do
not
use
blue
.)
2 DC power lines –
black
and
red
. (If each “HiLo” unit has its own DC power supply, omit this step.)
b. Next, connect the reader’s
black
wire to the panel port’s Ground or Negative or Data Common terminal,
and also
to the power supply’s Negative terminal.
c. Connect the reader’s
green
wire to the Data-0 terminal. Connect the
white
wire to the Data-1 terminal.
d. For alternating control of the two units, connect one unit’s
orange
wire to the
violet
wire of the other unit;
also, connect the first unit’s
violet
wire to the other unit’s
orange
wire.
e. Connect the
gray
drain wire to the shield of the connecting cable.
If power and data are in separate cables, connect all three drains/shields together near the reader.
f. If the LED and/or Beeper/Alarm features are used, connect the
brown
and/or
yellow
wires.
g. At the end of the cable(s) near the panel and near the power supply, connect the cables’
shield
to a
verified earth-ground.
h. Last, connect
red
to the DC power supply’s Positive terminal.
