DMA20

● With the key lock function.
● One key to page all zones.
● 2 chime tones, chime up and chime down.
● One-channel hidden microphone volume knob.
● With dual RJ45 ports. With zone control and override function.
● Featured by signal level indication, it has more intuitive paging sound pressure.
● Zone-independent switches for quick control of six-zone switches of the amplifier.