Indoor wall-mounted speakers with first-class balance, ABS plastic shell (black and white optional., iron meshThe equipment is designed with embedded computer technology and DSP audio processing technologyHigh-speed industrial-grade chips are used, and the startup time is less than 1sBuilt-in 1-channel network hardware audio decoding module, supporting TCP/IP, UDP, IGMP (multicast. protocolsRealize network transmission of 16-bit stereo CD-quality audio signalsBuilt-in Class D 2×25W power amplifier circuit, with delicate sound quality and strong powerSet up an external microphone interface, used with a collar clip or head-mounted microphoneUnique PPT page turning and one-key black screen function, it is more handy to cooperate with projectors, computer presentations or classroom screen explanationsBuilt-in laser pen, with laser electronic pointer functionBuilt-in language switching function, Chinese and English can be selected at willBuilt-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 missedLCD display function, can display volume, power, charging status and channel information, etc.Custom key function, allowing users to customize functions according to their own needsUSB interface, realize charging and data content writing management operationsBuilt-in lithium battery power supply, USB charging, more convenient to useWhen there is no signal or weak signal, the transmitter automatically enters the mute function modeUltra-long talk time, uninterrupted use for more than 8 hours, to meet the user's daily work needsIt has the function of actively taking over tasks when the network and server are disconnected, and can realize automatic playback when the terminal is disconnectedIt comes with 4G large-capacity memory, and the program is transmitted to the SD card through the network for storageBuilt-in high-precision timing digital clock chip, power-off timing is not less than 3 years, with network synchronization functionHigh-strength mica carbonized polypropylene diaphragm, providing clear language performance1 line and 1 microphone input interface, with independent volume adjustmentNetwork audio signal can be adjusted locallyThe device IP address has a reset button, and the initial settings can be restored when the IP address is lostBuilt-in audio processing circuit, supports multi-channel signal amplification and mixing, supports 3-level audio signal priority managementSupports 1000-level custom audio priority silent controlSupports PSTN telephone broadcasting, supports SMS voice broadcastingSupports PSTN telephone broadcasting, supports SMS voice broadcastingSupports mobile WIFI on-demand, supports wireless remote control on-demandSupports server unified authorization operation management function, unified configuration management user and passwordSupports DHCP, compatible with routers, switches, bridge gateways, Modem, Internet, 2G, 3G, 4G, multicast, unicast and other network structuresSupports intelligent voice prompt function when registering new terminal configuration (if the device is connected.Supports 15KVESD protection, built-in network isolation lightning protection processing circuit1 PC download IP address serial port, used to modify the network decoding module IP addressDigital network products, easy to expand, not restricted by geographical location, no need to increase the room management equipmentAdopts the design concept of common network free line construction, easy to installThe power supply of the equipment adopts a switching power supply design, and the AC100~240V voltage can work normally 
