Application:
It is widely applicated to ordinary classrooms, multimedia classrooms, offices, meeting rooms, prisons, hospital departments, subway and other places to play a recorded voice file or background music. It also can be used as a local PA broadcast.
Features:
*  Professional integration wall mounted design, the speaker case designs is conform to sound resonance principle design concept, with excellent appearance.
*  Adopted embedded computer and DSP audio processing technology.
*  Built-in one channel network hardware audio decoding module, it supports TCP/IP, UDP, to realize the network transmission of 16-bit CD-quality audio signals.
*  Built-in 2 channel digital amplifier 2 x 20W, 1 channel to connect main speaker, another connect sub-speaker to fulfill smooth and strong sound quality, with network volume setting.
*  Built-in high performance main/standby switching module, off the net Power failure main/ standby switch time less than 0.3 seconds, and the standby/main switching time is less than 0.3 seconds when the network is powered on.
*  With 1 AUX input, independent volume potentiometer control, support offline local paging function. Support mute volume preset and background music mix output preset.
*Support 2.4G wireless audio module can be expanded to realize local amplification of the 2.4G wireless microphone.
*Support connecting with Bluetooth receiver to receive Bluetooth audio for local sound broadcasting.
*  1 channel 100V constant voltage signal backup input, only switch to the backup channel when the machine has no network.,to avoid crosstalk between local signal and backup signal.
*  Built-in 2 priority settings:
1) Network voice alarm has higher priority than AUX and Network BGM
2) AUX has higher priority than Network BGM
*  Compatible with any network structure such as routers, switches, bridge gateways, Modem, Internet, 2G, 3G, 4G, etc.
*  Easy extension, no geographic location restriction, no need additional managerial equipment, adopted design concept of common network-free line construction, easy to install.
*  It supports remote hardware upgrade of the terminal, no need go to upgrade at the local site, to reduce maintenance burdens and make more simple operation.
Specifications:
| Model | T-7707B | 
| Network Interface | standard RJ45 input | 
| Transmission Speed | 100Mbps | 
| Protocol Support | TCP/IP,UDP | 
| Audio Format | MP3 | 
| Audio Mode | 16-bit CD quality | 
| Sampling Rate | 8K~48KHz | 
| AUX Input Sensitivity | 350mV  (unbalanced) | 
| Frequency Response | 80Hz~16KHz +1/-3dB | 
| THD | ≤1% | 
| SNR | >65dB | 
| Power Consumption | ≤50W | 
| 100V Input Backup | support | 
| Circuit Protection | Overload, short circuit protection | 
| Operating Temperature | 5℃~40℃ | 
| Operating Humidity | 20%~80% relative humidity, non-condensing | 
| Operating Power Supply | 190-240V 50-60Hz | 
| Size | 190×180×280mm | 
| Weight | 3.5Kg |