Range is the maximum distance two Push2Talk devices can communicate over. The range stated is calculated under optimal conditions, actual coverage varies according to terrain or operating conditions and is often below maximum.
The Scan feature allows your radio to cycle through the available channels, stopping on a channel when there is a tranmission to receive. The monitor feature allows your radio to receive weak signals on the current channel.
The Voice Operated Transmit (VOX) feature allows you to transmit voice without pressing and holding the push-to-talk (PTT) button. The Room Monitor feature allows you to transmit voice in a room without pressing and holding the push-to-talk (PTT) key. The radio automatically transmits voice when the volume reaches the preset level. In Room Monitor mode, your radio cannot receive signals.