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High sensitivity acoustic sound microphone using split block design easy to install and demount.
Includes a Built-in imported chip, high sensitivity microphone. With a integrated front audio amplifier, this microphone can drive directly to an Active speaker, DVR and recorder. Using new echo elimination technology, effectively reduces the echo. Suitable for places such as police department, court room, meeting room, interrogation room, bank, etc. Get more alternative high quality products better than typical amazon and ebay cheap items or Lorex Surveillance System
• Monitoring range: 10-100sqm (adjustable) • Working voltage: 12 V DC regulated power • Supply current: 20mA • Transmission distance: up to 3000meters • Sensitivity Reduction: -35db • Signal Noise Ratio: 70db • Frequency response: 20hz to 20KHz • Connecting way: red line--power, black line - ground wires, white line -- audio. • Weight: 80g (Size: 95mm*95mm*30mm