NEC NP2250 - Manual (Page 138)

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Setting a Password for HTTP Server [HTTP SERVER]
This option allows you to assign a password when you use your HTTP server. A password must be between 1 and
10 alphanumeric characters.
To set and delete a password, repeat steps described in [BACKGROUND LOCK].
Turning On or Off Remote Sensor [REMOTE SENSOR]
This option determines which remote sensor on the projector is enabled in wireless mode.
The options are: FRONT/BACK, FRONT, and BACK.
6. Using On-Screen Menu