●Pointing direction adjustable installation structure, with the treatment of sandblasting and oxidation on the all-metal shell, the overall structure is stable and adaptable
●To adopt SPON autonomous noise reduction algorithm to reduce effectively background and environmental noise, available for adjusting proper noise reduction mode according to different scenarios.
●High-speed voice DSP processing unit combined with AEC technology makes the sound pickup with the features of fast and stable response and high speech intelligibility.
●With self-checking function and parameters configuration via external acoustic wave.                                                                                                           
●With a built-in AGC circuit to suppress high-intensity sounds automatically and eliminate the sound differences near and far.
●Available for being powered via centralized power supply, camera, DC power supply(DC 8V-30V)
●With working temperature  range  of  -30 ° C ~ 75 ° C and protection grade of IPX6 to meet a variety of harsh environments;
●With function of polarity reversal of power supply and lightning strike protection.
●Supportive of analog audio isolation output and adjusting its amplitude      
●With an integrated professional voice processing chip for connecting active speakers, PC, DVR, IP camera etc.
●With ultra-strong audio line transmission technology, the signal transmission distance can reach 3000 meters (Recommend to use shielded cable for complex electromagnetic environment).
●Passed the inspection by the Testing Center for Quality of Public Security&Police Electronic Products under the Ministry of Public Security