产品介绍 |
 Built in Preamplifier
Adjustable button Adopt Taiwan design scheme, the miniature SMT design. Microphone : Electret condenser Special Circuit: DSP de-noise, AGC circuit |
性能参数 |
Pickup range: 5-50sqm transmiting distance(shield cable):3km Sensitivity: -35Db SNR: 70dB (1m/40dB) 40dB (10m/40dB)1KHz at 1 Pa Polar Pattern: Omni-directional Voltage: linear power supply (transformer) dc 9-12 v Electric current: 20MA Frequency range: 100-100 KHZ Output impedance: 600 ohm non equilibrium Connecting mode: red (DC) white (RCA) Balck( G) Apply to Hikvision, dahua, hanbang and other DVR