10
Installation
The MRKP1 is designed to mount in a standard single-gang electrical back-
box (J Box – see Specifications sections for details). Typical mounting height is
56-60 inches (1.53 meters) from the floor to the bottom of the frame. This
provides optimum viewing for the largest number of people.
Route the CAT-5 cable from the MRC88m into the back of the electrical back-
box, terminate it with an RJ-45 connector after it is passed through the
electrical back-box. Connect them to the appropriate RJ-45 connector on the
rear of the MRKP1 (“CONTROLLER” for connecting to MRC88m, or
“EXTENSION” if connecting to an extension keypad). If using an IR Receiver,
strip the ends of three conductors of the IR receiver’s cable and insert into the
appropriate terminals of the IR Input terminal block shown in Figure 3.2.
Once connections are made, mount the MRKP1 in to the electrical back-box
using the two provided screws. Mount the Trim Plate Bracket as shown in the
Figure 2.5 on next page, and then snap the Screw-less Trim Plate in place.
Figure 2.4: MRC88m – MRKP1 Pin-out diagram for Cat-5 cable
(T568B configuration)
Wire Color
Pin #
Signal
white/orange
1
485 +
orange
2
485 -
white/green
3
12V RET
blue
4
IR RET
white/blue
5
IR
green
6
+12V
white/brown
7
Attn. 485
brown
8
IR Loop Back
Cat 5
Cable
RJ45 Connector at
Controller/Amplifier
RJ45 Connector
at Keypad
Wire Color
Pin #
Signal
white/orange
1
485 +
orange
2
485 -
white/green
3
12V RET
blue
4
IR RET
white/blue
5
IR
green
6
+12V
white/brown
7
Attn. 485
brown
8
IR Loop Back
11
Note: Do not mount the MRKP1 in the same electrical back- box as high
voltage devices such as electrical outlets or switches.
Figure 2.5: MRKP1 Keypad Installation
North American standard
one-gang electrical back-
box
