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MRC88 / MRAUDIO8X8 QUICK START GUIDE
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Figure 29 – MRC88 Keypad Rear Panel Features
MRC88 KEYPAD - REAR PANEL FEATURES AND CONNECTIONS
15. Controller Terminal. RJ45 Jack. Connects Keypad to zone keypad input on MRC88 Controller via CAT5
cable.
16. Expansion Terminal. RJ45 Jack. Allows keypad to be daisy chained to another keypad for multiple control
locations within a zone. Up to 4 keypads are supported per zone.
17. Keypad Address. Pair of Jumpers. Used to assign Keypad Address. Each Keypad in a zone must have a
unique address (up to 4 keypads in a Zone).
18. Zone Termination. Jumper. Do not remove jumper if there is only one keypad in a zone. If there is more then
one keypad in a zone, remove from all but the last keypad in the daisy chain configuration.
19. Sensor Enable. Jumper. Enables IR sensor on Keypad. Remove when using an external IR receiver.
20. IR Sensitivity Adjustment. Carefully adjust for background light level to prevent false triggering of the IR
circuits. Slowly turn counter-clockwise to reduce sensitivity.
21. LCD Backlight Adjustment. Adjusts brightness of LCD backlight. This adjustment does not affect the
backlight level for the buttons. Slowly turn counter-clockwise to reduce brightness.
22. IR In-Zone. 2-Terminal WECO style socket - Zone IR out for local ‘In-Zone’ emitter out. Used for IR control of
equipment in the same location as the keypad. Any IR generated from within the Zone (or routed to that zone
from another) will be output from the IR IN-Zone connector as well as the Zone IR jack on the rear of the
Controller. This feature is ‘selectable’ via Universal Dragon™ Software.