First-class balanced indoor wall-mounted speakers, ABS plastic shell (black and white optional., iron mesh The equipment is designed with embedded computer technology and DSP audio processing technology High-speed industrial-grade chips are used, and the startup time is less than 1s Built-in 1-channel network hardware audio decoding module, supporting TCP/IP, UDP, IGMP (multicast. protocols Realize network transmission of 16-bit stereo CD-quality audio signals Built-in Class D 2×25W power amplifier circuit, with delicate sound quality and strong power It has the function of actively taking over tasks when the network and server are disconnected, and can realize automatic playback when the terminal is disconnected It comes with 4G large-capacity memory, and the program is transmitted to the SD card through the network for storage Built-in high-precision timing digital clock chip, power-off timing is not less than 3 years, and it has network time synchronization function Built-in Bluetooth wireless audio transmission and receiving module, supporting Bluetooth microphone wireless mobile speaking Set up an external microphone interface, used with a collar clip or head-mounted microphone Unique PPT page turning and one-key black screen function, which is more convenient to use with projectors, computer presentations or classroom screen presentations Built-in laser pen, with laser electronic pointer function Built-in language switching function, Chinese and English can be selected at will Built-in high-sensitivity dual pickup microphone, manual switching or automatic switching, to achieve the collection of sound sources of all frequency bands that can be perceived by the human ear, to ensure that no explanation content is missed LCD display function, can display volume, power, charging status and channel information, etc. Built-in analog audio signal backup module, supports constant voltage 100V signal input When the device detects no network signal input or power failure, it automatically switches to input constant voltage signal amplification to achieve dual line redundancy Custom key function, allowing users to customize functions according to their own needs USB interface, to achieve charging and data content writing management operations Built-in lithium battery power supply, USB charging, more convenient to use When there is no signal or weak signal, the transmitter automatically enters the mute function mode Ultra-long talk time, uninterrupted use for more than 8 hours, meeting the user's daily work needs High-strength mica carbonized polypropylene diaphragm, providing clear language performance 1 line and 1 microphone input interface, with independent volume adjustment Network audio signal can be adjusted locally The device IP address has a reset button, and the initial settings can be restored when the IP address is lost Built-in audio processing circuit, supports multi-channel signal amplification and mixing, supports 3-level audio signal priority management Support 1000-level custom audio priority silent control Support PSTN telephone broadcasting, support SMS voice broadcasting Support mobile WIFI on-demand, support wireless remote control on-demand Support server unified authorization operation management function, unified configuration management user and password Support DHCP, compatible with routers, switches, bridge gateways, Modem, Internet, 2G, 3G, 4G, multicast, unicast and other network structures Support intelligent voice prompt function when the terminal is newly configured and registered (if the device is connected. Support 15KVESD protection, built-in network isolation lightning protection circuit 1 PC download IP address serial port, used to modify the network decoding module IP address Digital network product, easy to expand, not restricted by geographical location, no need to add room management equipment Adopt the design concept of common network free line construction, easy to install The equipment power supply adopts switching power supply design, AC100~240V voltage can work normally
