Auto-mute
Intercom Speaker built-in PIR sensor when there are no customers, intercom will automatically enter the silent state to avoid the noise from outside.
Aluminium alloy shell
High protection, simple design, the temperature range of -20℃ ~ 60℃ can work normally.
Full Duplex
Support both sides to talk at the same time.
Volume Control
Support to turn on/off intercom or speaker, and adjust the volume.
