Key Lock Mode Status - Tadiran Telecom Emerald ICE Quick Start Manual

Extra Functions
The user can press any key to "wake up" the unit. If the handset
receives any special information from the Base Unit, it will also wake up
automatically.
Note:
If the handset is in sleeping mode, the LED will not be turned on.

Key Lock Mode Status

If a user presses and holds the [Flash] key for 2 seconds, the handset
will be in key locked/unlock mode.
When a handset is in the key unlocked mode (normal mode) and long
keypress [Flash], the unit will enter the lock mode automatically. The
LCD will display a 3-second display as follows to indicate how to unlock
the mode:
After 3 seconds, The LCD will display:
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