The 4G waterproof network column speaker terminal is intelligently controlled by the main control system and can play background programs, emergency paging, alarm signals, and other content from the main control system, providing excellent stability and securitySupports LAN broadcasting and cloud broadcastingSupports real-time network broadcasting and scheduled broadcastingSupports three transmission streams: high-quality, balanced, and low-bandwidthUtilizes a proprietary protocol developed independently, achieving real-time audio latency of <100ms, media playback of <50ms, and highly synchronized playback on multiple terminals. Highly fault-tolerant in weak network environments, with packet loss rates <5% for normal operation and <20% for distinguishable human voicesSupports online remote upgradesTransmission bandwidth ensures clear voice quality. Up to 50kbpsSupports unified server authorization management, unified configuration of user accounts and passwords, and multi-level management1-channel 4G network module, supporting IoT cards from major carriers (China Telecom, China Mobile, and China Unicom)Standard configuration: one 10/100 MRJ45 network communication port, supporting both LAN and WAN deploymentUtilizes a file playback caching mechanism to save bandwidth, and uses a high-compression encoding format for pagingSupports mobile app wireless broadcasting, regardless of region, number, or distance, for easy operationSupports linked LED display (customization required)Supports DC power supply, can be powered by an external DC adapter or solar power. Power supply (customizable)Supports one short-circuit input and one short-circuit output (customizable)Supports offline playback, and scheduled tasks can run normally even when offlineSupports online alarm linkageSupports automatic standby and energy-saving operation mode when there is no music signal (including local audio signal)Can be linked to a camera to view camera content in real time through the host softwareFeatures overvoltage, overheating, and short-circuit protectionThe woofer is made of waterproof paper disc with cloth edge and 70mm Y30 external magnet design, which provides strong bass, clear vocals, and crisp treblePET diaphragm design and natural silk diaphragm for the tweeter, ensuring clear and rounded sound. Transparent, clear and brightAluminum housing: 1.6mm aluminum with high-grade spray-painted finish. Safe, reliable, rust-resistant, durable, and fade-resistant. Low resonance noise and stylish appearanceAluminum front grille: 1060 pure aluminum, hardened and anti-oxidation treated, durable and rust-resistantPET diaphragm design and natural silk diaphragm for the tweeter, ensuring clear and rounded sound. Transparent, clear and brightAluminum housing: 1.6mm aluminum with high-grade spray-painted finish. Safe, reliable, rust-resistant, durable, and fade-resistant. Low resonance noise and stylish appearanceAluminum front grille: 1060 pure aluminum, hardened and anti-oxidation treated, durable and rust-resistant 
