ViewSonic IFP6552-2F User Manual page 147

NOTE:
1. This IR-pass-through code is different from the RCU key code.
2. Special control sequence for POWER key under IR-pass through mode.
2-1. When Display is OFF and receives the IR POWER code: Display will turn itself
on, then forward the POWER code to the host via RS-232.
2-2. When Display is ON and receives the IR POWER code: Display will forward the
POWER code to the host via RS-232, then turn off itself.
2-3. When SET-POWER LOCK is enabled, the Display will not respond to POWER
key pressing.
3. The VOLUME UP and VOLUME DOWN code will repeatedly output when you
press and hold the keys.
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