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To activate backlight:
Press / toturnbacklightOnfor3seconds.
YoucanpressanykeytoturnbacklightOnforanother3seconds.
NOTE:Thebacklightfunctionwillnotoperateif“ ”or“ ”isdisplayed.
To toggle keypad lock On or Off:
Pressandhold / for2seconds. indicateskeypadislocked.
BACKLIGHT AND KEYPAD LOCK