Gefen EXT-HD-SL-444 User Manual page 31

Operating the 4x4 Seamless Matrix for HDMI
1. Press the Lock button on the IR remote control.
2. The Lock button, on the front panel of the matrix, will remain illuminated as long as
the matrix is locked.
3. To unlock the matrix, press the Lock button. The Lock button will turn off.
The matrix is now unlocked and can be used normally.
Once the matrix is unlocked, the Lock button will no longer be illuminated.
Using the IR Remote Control
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Locking / Unlocking the Matrix
Lock button