20S
- 20S User's Guide Location
- Factory Reset
- Intercom Pairing
- Pairing Mobile Phone
- Mobile Phone Call Making and Answering
- FM Radio On / Off
- Powering On and Off
- Fault Reset
- Two-Way Intercom
- Playing Music
- GPS Pairing
- Charging
- Scan and Save Radio Stations
- Seek and Save Radio Stations
- Three-Way Intercom
- Checking the Battery
- Remote Control Pairing
- Sharing Music
- Multi-Way Intercom
- Volume Adjustment