Indoor wall-mounted speakers with first-class balance, 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 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, it is more handy to cooperate with projectors, computer presentations or classroom screen explanations 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. Custom key function, allowing users to customize functions according to their own needs USB interface, realize 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, to meet the user's daily work needs 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, with network synchronization function 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 Supports 1000-level custom audio priority silent control Supports PSTN telephone broadcasting, supports SMS voice broadcasting Supports PSTN telephone broadcasting, supports SMS voice broadcasting Supports mobile WIFI on-demand, supports wireless remote control on-demand Supports server unified authorization operation management function, unified configuration management user and password Supports DHCP, compatible with routers, switches, bridge gateways, Modem, Internet, 2G, 3G, 4G, multicast, unicast and other network structures Supports intelligent voice prompt function when registering new terminal configuration (if the device is connected. Supports 15KVESD protection, built-in network isolation lightning protection processing circuit 1 PC download IP address serial port, used to modify the network decoding module IP address Digital network products, easy to expand, not restricted by geographical location, no need to increase the room management equipment Adopts the design concept of common network free line construction, easy to install The power supply of the equipment adopts a switching power supply design, and the AC100~240V voltage can work normally
