This article provides more information about the 1502LM OSD and Power Lockout Feature
On-Screen Display (OSD)
Five OSD buttons are located on the rear of the monitor.
OSD and Power Lockouts
Press and hold the โMenuโ and โโ buttons simultaneously for two seconds to enable/disable the OSD Locking feature. When OSD Locking is enabled, pressing any of the Menu, Up, Down or Select keys will have no effect.
Press and hold the โMenuโ and โโ buttons simultaneously for two seconds to enable/disable the Power Locking feature. When Power Locking is enabled, pressing the power switch will have no effect.
Please report any broken links by emailing support@elotouch.com and include a link to the knowledge article