EverFocus TFT EN-7519E - Manual (Page 21)

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…………………………………………………………………………… INSTRUCTION MANUAL
5. Key Lock
Press the up( ▲) / down(▼) button to select the key lock menu.
Press the right( ▶) or ENTER button
Press the up( ▲) / down(▼) button select on or off
Press the MENU button to save.