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Name：Audio Surveillance and Microphones；Audio Monitoring Kits; Audio Surveillance Microphone；Audio Surveillance Equipment；High Gain CCTV Security Surveillance Audio Mini Microphone；High Sensitive Preamp Microphone Kit for
Security Surveillance Audio
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Model：SM-102A
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Processing Chip：low noise audio processing chip, sensitivity adjustable
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Product Characteristic：
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High fidelity and low noise process chip. After multiple times frequency selected it can restrain
the noise efficiently. Pure tamber, strong dynamic, built-in AGC circuit. Lots of strong points:
low noise, high fidelity, wide operating voltage, low power dissipation and long transmission distance etc.
built-in wall type, match use with the cameras can realize the AV sync. It’s applied to various places
for hidden audio monitoring. It applied to all the audio monitoring place such as bank, school, prison, hospital,
marketplace, factory and meeting system.
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Technical Parameter：
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Connection mode: red wire connect with the power”+”, black wire connect with the power “-” and earth wire;
white wire connect with the audio input of recording equipment
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1 Connection
Audio monitoring range: 100 square meter
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2. Operating voltage: DC6V—12V
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3. Current: 5MA
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4. Output level: 0-6V
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5. Frequency range: 300-5KHz
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6. Frequency respond: 2.5dB
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7. Output impedance: 600Ω
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8. External dimension:
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9.weight:
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