Surveillance Pickup High Sensitivity Noise Reduction for Bank School Service Window DC9?18V

Feature: 1. Surveillance pickup has strong anti?interference, and has the advantages of pure sound quality and powerful action. 2. Surveillance pickup has exquisite round appearance, precise craftsmanship and materials help restore high?fidelity sound quality and make the sound even. 3. The audio sound monitor kit microphone is high sensitivity and high fidelity performance. 4. Omni?directional pickup, high sensitivity. Closed circuit surveillance pickups, safe to use. 5. High quality wire, low power consumption, long transmission distance, durable, stable and safe.(pickup area,5square meters~ 100square meters) Specification: Item Type: Pickup Material: ABS Use Place and Area: Bank School Public Security Agency (5-100square meters) Signal Transmission Distance: Approx. 1000m/3280.8ft Frequency Response: 20Hz - 20kHz Pointing Characteristic: OmnidirectionalOutput Signal Amplitude: 2.5Vpp/-25dbConnection Method: 3-wire system (red: positive power supply, black: common ground GND, white: audio positive) Transmission Cable: RVVP3 x 1.5mm2 Power Supply Voltage: DC9-18VDiameter: Approx. 78mm/ 3.1inHeight: Approx. 28mm/ 1.1in. Package List: 1 x Pickup1 x English Manual Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.