Technical Specification

Model: LF-7705A

Network Interface: Standard RJ45 input

Support Protocol: TCP / IP, UDP, IGMP (multicast)

Audio Format: MP3

Sampling Rate: 8K~48KHz

Transmission Rate: 100Mbps

Audio Mode: 16-bit CD quality

Display Screen Size: 3.4 inches

Display Screen Type: 128 × 64 dot matrix display


Operation Mode: Infrared remote control

Remote Distance: ≤10 meters straight, accessibility

THD: ≤1%

Frequency Response: 80Hz~16KHz  +1dB/-3dB

SNR: >65dB

AUX Input Sensitivity: 350mV industry standard

voltage limited terminals

MIC Input Sensitivity (Unbalanced): 5mV

Short-circuit Output: DC30V 3A

Working Temperature: 5℃~40℃

Operating Humidity: 20% to 80% relative humidity,


Total Power Consumption: ≤50W

Power Input: ~190-240V 50-60H

Size: 170×134×45 mm

Weight: 0.9kg


It is wide application to schools, office buildings, convention centers, alarm centers, railway stations and so on. Based on network digital transmission, it fulfill the functions of BGM broadcast, timing ringing task, sound source collection, one-way paging, and so on.




*  Standard wall-mounted design, with small size, aluminum alloy structure design, exquisite beauty.

*  With clear 3.4 inches LCD screen, with infrared remote control function, easy to operate.

*  Adopt industrial dual core processing chip (ARM+DSP), to ensure the start-up time is less than 1s.

*  Built-in network IP decoding module, to achieve network music real-time broadcasting and paging;delay time of signal collection playback and paging is less than 30mS.

*  Built-in broadcast on demand module, to enable real-time broadcast on-demand from network media library.

*  Build-in 2 x 30W digital amplifier, lower heat and higher efficacy, with CD class perfect sound.

*  1 Mic input, 1 line input, suitable for local broadcast.

*  Priority: 1) Network voice alarm is the highest priority.

                 2) Local MIC and AUX is same level,they have higher priority than the network background music.

*  Compatible with routers, switches, Bridges, Modem, Internet, 2G, 3G, 4G, multicast, unicast etc.

*  2 short-circuit outputs (red, green), the short-circuit outputs only provide the signal of the short-circuit switch, which is controlled by the IP software.

*  It supports remote hardware update of the terminal, no need go to upgrade at the local site, to reduce maintenance burdens and make more simple operation.

*  “external control components”can be optional or prepare by themselves.