Add high quality audio to any surveillance installation with the VSAMICB. This microphone enables audio recording and features adjustable sensitivity, DNR and auto gain control. Product features 80dB signal noise reduction for low background noise 10 ~ 150m² effective range Adjustable sensitivity; audio gain control Dynamic range up to 104dB (1KHz at Max dB SPL) Cascading support for multiple audio outputs Stylish aluminium casing Ideal for ceiling & wall mounting; for indoor use only Legality of voice recording in Australia varies by state and may require knowledge & consent from all parties. Refer to individual state laws for details. Specifications Audio Microphone - Electret Condenser Microphone Operation Area - 5 ~ 150m² Sensitivity - -30dB Bandwidth Frequency - 20Hz ~ 20kHz Direction - Omni-directional Signal-to-Noise Ratio - 82dB (1m 40dB sound source SPL) / 52dB (10m 45dB sound source SPL) / 1kHz at 1Pa Dynamic Range - 106dB (1KHz at Max dB SPL) Max. Sound Pressure - 120dB SPL (1KHz, THD 1%) Output Impedance - 600Ω (unbalanced) Output Signal Amplitude - 2.5Vpp/-25dB General Power Supply - 12VDC (9 ~ 18V) Power Consumption - 50mA Operation Environment - -25°C~+70°C Ingress Protection- N/A Material - Aluminium Dimensions - Φ70 x 21mm Interface Ports - 2 x RCA female ports, 1 x DC power port
