Dear Manager:
  sound pickup PK-AS-AUDIO from China Powerking.

Product Name:sound pickup PK-AS-AUDIO Product S/N:120309105 Spec:sound pickup Product Memo:Voice optimized noise reduction circuit Product Class:99.CCTV Accessories

Product Description: ¡ì soundtrack voice optimize the monitor head ¡ì Broadband professional voice optimized circuit ¡ì Built-in voice optimized circuit ¡ì imported IC, sapphire capacitance ¡ì Smoke shell, hidden ¡ì 2mm pinhole design ¡ì Japan's imports of silver-plated capacitor microphone 20 to 100 m2 Impedance 600 ohms Frequency of 100 ~ 16Khz Power 9 ~ 12VDC Size 110 * 52mm For Kang, Dahua DVR device

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