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Model No.: HM-M423B
Dolby Noise Reduction,Audio External Amplified Microphone, Audio monitoring for Security Systems, with two connections
Particular and small design
Connection:Audio female , female DC power plug
Dolby Noise Reduction
High sensitivity, high bandwidth, low distortion
Reduce the echo effectively
Built in micro processing chips and audio digital analog processor
Built in DSP(Digital signal processor)and automatic gain control(AGC)circuit
Monitoring Scope: 5～150㎡
Working Voltage:DC 9V-12V
Operating Current：25mA
Output Signal：2.5Vpp / -25db
Frequency Rang：200～ 10kHz
Output Impedance： 600Ω
Signal to noise ration (SNR)：60dB (1m 40dB sound source)
50dB (10m 40dB sound source)
Direction：Omnidirectional
Max SPL (sound pressure level)：80dB SPL (1KHz, THD 1%)
Dynamic Range：35dB (1KHz at max dB SPL)
Sensitivity：-60dB
Material：Plastic + PVC
Color：White/Black
Frequency Rang：200～ 10kHz
Output Impedance： 600Ω
Signal to noise ration (SNR)：60dB (1m 40dB sound source)
50dB (10m 40dB sound source)
Direction：Omnidirectional
Max SPL (sound pressure level)：80dB SPL (1KHz, THD 1%)
Dynamic Range：35dB (1KHz at max dB SPL)
Sensitivity：-60dB
Material：Plastic + PVC
Color：White/Black
