120 WATT 100 VOLT IP WALL MOUNT AMPLIFIER NAS-8505B12 Datasheet Manual Firmware FeaturesHigh-speed industrial-grade dual-core (ARM+DSP) chips, starting time ≤ 1 second.Built-in network audio decode module, it with independent WAV,MP3 double decoding chip.Supportive of timing ringing, real-time acquisition and broadcasting cooperated with server, supports remote digital volume adjustment;With one audio input and one audio output;With one alarm input and one alarm outputConstant pressure 100V outputWith a standard RJ45 interface,supportive of crossing network segment and router, accessible to the system if the Ethernet is available;