Hytera TF-515 - Supplementary Features; Keypad Lock; Scan; Monitor

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7. Supplementary Features
7.1 Keypad Lock
The Keypad Lock feature allows you to lock the keypad to avoid accidental operations when the radio is not in
use. In the keypad lock mode, you can initiate calls and turn the radio on or off.
To lock or unlock the keypad, press and hold the Keypad Lock key until appears or disappears on the
screen.
7.2 Scan
The Scan feature allows you to find someone in your team who has accidentally changed the channel, and can
quickly find unused channels for your own use.
To turn on this feature, press the Scan key. The radio displays and begins to scan channels. When detecting
activities on a channel, the radio stays on the channel to receive signals. Two seconds after the signal disappears,
the radio continues to scan channels.
To turn off this feature, press the Scan key again.
7.3 Monitor
The Monitor feature allows the radio to receive weak signals on the current channel.
To turn on this feature, press and hold the Monitor key. The radio displays and begins to monitor the
channel and receive signals.
To turn off this feature, release the Monitor key.
7.4 Power Level (TF-512 only)
The Power Level feature allows you to adjust the power level for the selected channel.
To adjust the power level, do as follows:
1. Press the Menu key for three consecutive times.
The current setting flashes.
2. Press the Up or Down key to select one of the following:

HI: enables communication with distant radios but consumes more battery power.