Speco D4VX User Manual page 20

 During Playback – To exit playback mode
 System lock – To lock a system when pressing ESC button for 5 seconds.
 System unlock – To unlock a system when pressing ESC button for 5 seconds.
⑩ SETUP: To open the SETUP menu.
⑪ Direction buttons: To move menu items or select a channel.
⑫ SEQ: To start auto sequencing the screen in full screen mode. (Toggle)
⑬ BACKUP: To start a backup operations in live or playback mode
⑭ 0~9: To select channel (1,2,3,..) or to enter a DVR ID number or use as number key.
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