For example, you can press and hold "Conver" button, and then one press of "6S" button, it will change to one tone, press "6S" button again it will change to another tone,repeat the operation until you find your wanted tone on "6S" button, release both buttons and next time the system will play the last tone you selected.
It’s the same way to choose tones on "High", "Bass", "6S", "Air Defense", "Hi-Lo" and "Wail-2".
1. Press and hold Button Conver , and then press Button A/B and repeat the press to Turn Up/Down the volume for warning tones.
2. Press and hold the Microphone Switch, and then press Button A/B and repeat the press to turn Up/Down the volume for the Microphone/PA system.