With the function of monitoring environmental noise which can adjust output volume of speaker automatically According to the environmental noise on site.
Clear broadcast under noisy situation, with the energy saving function of volume turn down & Stand by when environment is quite.
Suitable for railway & airport etc. public transportation Station.
With an integration of the network audio decoding and Digital amplifier and speaker「 and an installation of wall mounted Design.
With a high-speed dual-core (ARM + DSP) chip of Industrial grade, start time<1s.
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