Network PA System – POE Network Outdoor Sound Column (Aluminum, 2×4.25", 30W, Linux)

Features:
- White painted all‑aluminum alloy shell and aluminum mesh grille, rust‑proof, sleek, compact, high‑end and elegant design.
- Adopts domestic integrated chips and Linux system, excellent stability, security, portability and flexibility, incomparable to single‑chip solutions.
- CPU: ARM Cortex A7 @ 900MHz.
- Audio Codec: Supports software codec, compatible with G.711, G.726, ADPCM, and audio 3A (AEC/ANR/AGC).
- Standard 1×10/100M RJ45 network communication interface, supporting LAN and WAN deployment.
- Built‑in 1‑channel network hardware audio decoding module for real‑time/timed music playback.
- Sampling rate adjustable in the background; freely select highest sampling rate in LAN for optimal sound quality (WAV 8K/16K/44.1K, AAC 16K/44.1K/48K optional).
- Background hardware resource monitoring: CPU/memory usage ratio and continuous running time.
- Supports remote upgrade of standalone and batch units over LAN/WAN.
- Supports POE IEEE 802.3at (25.5W) protocol. With POE switch, only one network cable required – simple construction, low cost.
- Power output: 25W (POE) or up to 30W with external DC24V/2A adapter.
- Equipped with 2×4.25‑inch full‑range speaker units – full frequency range, clear, bright, pleasant sound quality.
- Built‑in Class D 30W power amplifier circuit – delicate sound quality, strong power.
- 1 set of short‑circuit signal input (trigger local alarm via software).
- 1 set of short‑circuit signal trigger output (drive other linked devices).
- Standby power <10W, meeting national environmental protection and energy‑saving certification standards.
- Supports DHCP, compatible with any network topology (routers, switches, Internet, multicast, unicast).
- 15KV ESD protection, built‑in network isolation and lightning protection circuit.

This **Network PA System** outdoor sound column delivers high‑fidelity weather‑resistant audio with POE convenience, ideal for gardens, campuses, and public squares.

Technical Specifications:
- Network Interface: Standard RJ45
- Supported Protocols: HTTP, HTTPS, UDP, TCP/IP, RTP, RTSP, RTMP, MQTT, FTP, SIP
- Audio Formats: mp3, wav
- Sampling Rate: 8K ~ 48K
- Network Transmission Rate: 100Mbps
- Audio Mode: 16‑bit stereo CD‑quality sound
- Output Frequency: 100Hz ~ 18KHz
- Harmonic Distortion: ≤1%
- SNR: ≥80dB
- Rated Power: 25W (POE), 30W (DC24V/2A)
- Short‑circuit I/O: Phoenix terminals
- Operating Temperature: -20℃ ~ 50℃
- Humidity: 20% ~ 80%, non‑condensing
- Power Consumption: ≤40W
- Input Power: POE / DC24V
- Dimensions: 373×152×100mm
- Material: Aluminum alloy / aluminum mesh / aluminum covers
- Speaker Units: 4.25″ × 2

In summary, this **Network PA System** POE network outdoor sound column with Linux OS, dual‑driver full‑range sound, and flexible power options is the ideal choice for parks, resorts, industrial campuses, and any open‑area IP broadcasting installation.