Chtoocy Rechargeable Intercoms Wireless for Home Room to Room 1 Mile Range 10 Channel, Wireless Intercom System for Home Business Office, Chtoocy Handheld Communication System Expandable (4 Packs, White)

Troubleshooting:1. Channel key does not light----Check if the intercom have power; Check the intercom ON/OFF.2. Cannot receive response----Please make sure the intercom set to designated channel? If not, be sure to release TALK when you are not speaking into the intercom. Also be sure you are not in MONITOR mode, MONITOR mode can not receive voice.3. Cannot talk to another intercom----Are both intercoms set to the same channel and code? Please make sure they are properly set up and that you’ve waited until the other user has finished talking.4. Strong, continuous "beep" sound----Move intercoms further apart to eliminate audio feedback. Or, change your intercom to another channel or code.5. Unit doesn't work----Try the units in a different location. If the units work in a different location but not in your home, there may be a problem with your home concrete wall.6. Static noise or cannot communicate----Confirm both units are set to the same channel and code when you want to communicate. Or, change location...