Avlink MRM-602P - Manual (Page 12)

M M M R R R M M M - - - 6 6 6 0 0 0 2 2 2 P P P
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 IR: Infrared receiver for the MRM-602P Switcher. The longest distance of your IR
remote controller to receive the signals is about 12 meters.
Figure 5-4 IR Receiving Distance