¡ì high-fidelity acoustic noise monitor head
¡ì Built-in DSP noise reduction circuit
¡ì imported ICs, coupling capacitance
¡ì net mounted design, the sound is clearer
¡ì 2mm pinhole into the audio port
¡ì Japan's imports of silver-plated capacitor microphone
¡ì including AGC voice incentives of circuit

10 to 150 m2
Impedance of 1000 ohms
Frequency 20 ~ 20Khz
Power 9 ~ 12VDC
Size ¦µ86 * 27 mm
For Kang, Dahua DVR device