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 (customizable)Supports DC power supply, can be powered by an external DC adapter or solar power. Power (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 mode for energy saving when no music signal (including local audio signal) is availableCan be linked to a camera to view camera content in real time through the host softwareFeatures overvoltage, overheating, and short-circuit protectionPP+rubber-rimmed woofer, 80mm Y30 external magnet design, and polypropylene diaphragm for stronger bassHorn design, with natural silk diaphragm and high-strength plastic horn for enhanced sound quality Clear, round, transparent, and bright soundAluminum housing, 3mm alloy aluminum plate, rust-resistant. Strong and durable, effectively preventing front panel resonance, cracking, and aging, with a stylish appearanceAluminum front grille, made of 1060 pure aluminum, hardened and anti-oxidation treated, resists deformation and rustFront panel made of PE wood-plastic materialAluminum front grille, made of 1060 pure aluminum, hardened and anti-oxidation treated, resists deformation and rustFront panel made of PE wood-plastic material 
