Wall-mounted design, private mold white alloy plastic injection molding, beautiful craftsmanship The terminal adopts embedded technology and DSP audio processing technology Adopting high-speed industrial-grade chips, the startup time is less than 1s Built-in 2×25W fixed resistance output Class D amplifier module, beautiful sound and strong power Built-in network hardware audio decoding module, supporting TCP/IP, UDP, IGMP (multicast. protocols Realize network transmission of 16-bit stereo CD quality audio signals Stereo audio channel output, can be connected to an external power amplifier or active speakers Stereo line input, 1 microphone input, with independent volume adjustment switch 1 USB input interface, can realize local USB playback function Built-in analog audio signal backup module, support constant voltage 70V/100V signal input When the device detects that there is no network signal input or power failure, it automatically switches to input constant voltage signal amplification to achieve dual line redundancy 1 short-circuit signal input, which can be connected to the linkage trigger signal, and can trigger the terminal alarm in an emergency 1 short-distance signal output, which can be linked to trigger other devices in an emergency 4G microphone has a long transmission distance. After successful connection, it can stably transmit audio data in an open area greater than 20 meters 4G+ automatically searches for channels with less interference and completes automatic pairing to ensure that the product does not cross-frequency, has strong anti-interference and stable transmission Expanded multiple 2.5G channels, effectively avoiding 2.4G signal interference such as WIFI/Bluetooth Adopting 64kHz/16bit sampling rate to meet high-quality audio transmission requirements Adopting two automatic anti-howling algorithms of frequency shift/notch, effectively suppressing howling while ensuring the pickup distance Built-in true reverberation function, effectively improves the speech quality, makes the speech not dry and laborious, and the reverberation level is adjustable Supports one-key mute function, after muting, AUX (3.5 audio input interface. can still transmit audio normally Supports built-in and external microphones, and can be configured with head-mounted microphones or lavalier microphones Supports AUX audio input, uses the universal 3.5mm interface, and unique stereo audio signal wireless transmission Supports laser pointers, automatic PD control technology to prevent safety accidents caused by excessive laser power. It is strictly forbidden to irradiate the eyes Support PPT page turning:PPT page turning module supports hot plugging and does not require driver software Base charging design, humanized design, built-in strong magnet automatically attracts close to ensure good charging contact, and supports MICRO USB charging LCD display, display connection status, power (charging display., volume, PPT function, etc. All settings have automatic power-off memory function, and personalized settings are more convenient to use Automatic audio energy detection, when no speech or audio input is detected, the module can output a control signal to control the amplifier to mute With power saving mode, when the device is turned on without connection or button for 5 minutes, it will automatically shut down; if there is no button operation within 1 hour after successful connection, it will automatically shut down Small size, ultra-low power consumption design, Chinese/English menu display Sandstone black hand-feel paint process, creating an excellent feel Terminal amplifier power automatic management, support software programming pre-opening function Support intelligent voice prompt function when registering new terminal configuration (if the device is connected. It has 1000 levels of custom audio priority silent control function It has unified server authorization operation management function, unified configuration management user and password It has breakpoint playback function of digital audio time lapse to ensure broadcast synchronization effect It has PSTN telephone broadcasting and supports SMS voice broadcasting function It has mobile WIFI on-demand function and supports wireless remote control on-demand function It supports DHCP and is compatible with any network structure such as routers, switches, bridge gateways, Modem, Internet, 2G, 3G, 4G, multicast, unicast, etc.