Optoma EH415 - Manual (Page 21)

English
21
User Controls
N
ote
N
ote
The remote control number must match the projector number for accurate
control;
To set the Remote Control Number: Press‘Remote ID’ until the LED above
the Power Off button in the top-right of the remote control starts to flash, then
input the desired remote control number (between 01-99) while the light is
flashing. The LED will flash quickly three times to indicate a successful change.
Press‘Remote All’ until the LED flashes quickly 3 times to reset the remote
control number back to ‘All’.
A remote control set to ‘All’ can be used to control any projector – regardless of
whether the projector has a set number or not.