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By writing frequency software, you can turn on/off the voice broadcast prompt sound or channel broadcast. When the voice broadcast prompt sound is turned on, when the user switches the current area, channel/characteristics through the terminal menu or knob, the terminal will report the voice files c......

There are many reasons for call interruptions, such as steals or scheduling described by high -priority walkie -talkie, interruption of intercom signals, and machine faults. If you need to support, you can contact the purchasing dealer or our business to get help, thank you!

This situation may be that the earplug socket of the intercom is bad.

When the intercom is often power -off, please check whether the battery touch of the intercom is deformed or broken. If so, please contact the local authorized maintenance station or return to the factory for maintenance.

See if the extreme communication distance of the intercom or the tall building is blocked in the basement. If not, please contact the local authorized maintenance station or return to the factory for maintenance.

In order to ensure the security of the communication business of the special department, the national radio management department specifically planned several groups for its use. The frequency range ranges from 350 ~ 390MHz. Its 350MHz ~ 370MHz is mainly used for public security systems.