Network PA System – Network Audio Terminal (Aluminum, Touch Screen, 2×30W, 2.4G Mic, Backup Input)

Features:

- Wall‑mounted design, made of milky white all‑aluminum alloy die‑casting, exquisite and elegant craftsmanship.
- Adopts domestic integrated chips and Linux system, excellent stability, security, portability, 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 interface, LAN/WAN deployment.
- Built‑in 1‑channel network hardware audio decoding module for real‑time/timed music playback.
- Sampling rate adjustable in 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.
- 4.3‑inch color touch screen display, industrial‑grade touch operation, sensitive touch feel.
- Excellent anti‑interference performance, eliminating instability in infrared signal operation.
- Supports multiple operation modes (play, pause, select, previous track, next track, volume adjustment).
- Supports on‑demand playback of music in the server‘s local media library.
- Equipped with factory reset icon for one‑click restoration.
- Supports manual or automatic IP address acquisition.
- Supports password login authority management to prevent unauthorized operation.
- Built‑in 2×30W fixed‑output Class D power amplifier – excellent sound quality, strong power.
- 1‑channel stereo audio output, compatible with external power amplifiers or active speakers.
- 1‑channel stereo line input and 1‑channel microphone input, with independent volume adjustment switches.
- 1‑channel USB flash drive input for local U‑disk playback.
- 1‑channel short‑circuit signal input for emergency alarm trigger.
- 1‑channel short‑circuit signal output for linking other devices.
- Adopts 2.4G working frequency band, stable audio transmission within 10 meters in open areas.
- Multiple frequency modes: automatic clean channel search and auto‑pairing on power‑on, no frequency interference, same microphone usable in any classroom.
- 48kHz sampling rate ensures high‑quality human voice.
- Supports volume adjustment and one‑key mute.
- Supports PPT page turning and one‑key screen blackout/restore (expandable).
- Built‑in rechargeable 3.7V polymer lithium battery (500mAh), Type‑C charging, fully charged in 2h, continuous use ≥8h.
- Built‑in analog audio signal backup module, supporting constant voltage 70V/100V signal input.
- Automatically switches to constant voltage signal when network is disconnected, realizing dual‑line redundancy.
- Standby power <10W, meeting national environmental protection and energy‑saving certification.
- Supports DHCP, compatible with routers, switches, Internet, multicast, unicast, any network topology.
- 15KV ESD protection, built‑in network isolation and lightning protection.

This **IP Network PA System** network audio terminal combines touch‑screen control, 2.4G wireless mic, local USB playback, and dual‑line redundancy for mission‑critical IP broadcasting.

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: 400Hz – 6KHz
- Harmonic Distortion: ≤1%
- SNR: ≥80dB
- Rated Power: 2×30W @ 8Ω
- Local Audio I/O: 3.5mm standard terminals
- Local Microphone Input: 6.35mm standard jack
- Short‑circuit I/O: Phoenix terminals
- Operating Temperature: -20℃ ~ 50℃
- Humidity: 20% – 80%, non‑condensing
- Power Consumption: ≤60W
- Input Power: DC19V/3A
- Dimensions: 220 × 160 × 43mm
- Weight: 1.28kg

In summary, this **IP Network PA System** network audio terminal with touch panel, 2×30W amp, 2.4G wireless mic, and analog backup input is the ideal choice for classrooms, conference rooms, and public spaces requiring reliable, interactive IP audio distribution with fallback protection.