Description

 Built-in digital processing circuit and multistage dynamic noise reduction processing

 Clear voice, low noise

 The echo eliminates technology and Reduce the empty room echo.

 Pinhole type design, convenient hidden installation

 AGC automatic gain control

 Monitoring range: 10~50 square meters.

 Apply to public security organs, trial, supervisor of the warehouse, divisions, police station, telecommunications, bank Treasury departments

Parameter

 Voltage: linear power supply (transformer) DC 9-12V

 Electric current: 20mA

 Frequency range: 100-100K Hz

 Output impedance: 600 ohm non equilibrium

 Transmission distance: 3000 meters

 Directivity: Omni-direction

 Signal-noise rate: 60db

 Sensitivity: -40db

 Connecting mode: red (power+) black (public) white (audio+)

 Apply to video recorders such as HIKVISION, dahua, hanbang.