Retevis RT42/RT642 Shortcut Key
Retevis RT42/RT642 Shortcut Key
Retevis RT42/RT642 Shortcut Key
Power key: long press to turn on/off the radio.
FM key: short press to turn on/off FM broadcast. Long press to turn on/off keypad lock.
Left/Right key: short press to adjust channel, long press to adjust volume.