产品描述：
监控第一手册
感谢您使用本产品，该产品是采用高保真芯片低噪声
通过几种选择有效的噪声抑制和高频声音干扰，回声消除腔有效地减少了严重的回声室开路，实现了完美的无线电
纯音，动态Weimeng，内置自动增益控制（AGC）电路设计
适应在银行，监狱，考场，商场，工业生产等场所窃听史信，噪声小，高保真，工作电压范围宽，功耗小，传输距离远等优点
新的灵敏度调节拾音器，电视监控，支持使用最佳产品的安防系统，以及利用摄像机实现同步视频和音频
监控：5 - 150平方米
信号传输线用一根带芯线的屏蔽最好，（顺时针运动就是调高音量）
连接方法：（KJ-008）
1，+ 12V：power'+'
2，GND：电源' - '
3，A输出：音频系统输入端口

电子参数：
电源：DC 6 - 12V
电流消耗：12mA
频率范围：200Hz至10kHz
频率响应：2.5dB
输出阻抗：600Ω
输出电平：0 - 6Vpp
尺寸：Φ= 69mm，h = 39mm
重量：35g

Product description:
Monitoring the first manual
Thank you for using this product, the product is as the adoption of hi-fi-chip low noise
Through several election-effective noise suppression and high-frequency sound interference, echo cancellation cavity effectively reduce the serious echo room open, to achieve a perfect radio
Pure tone, dynamic Weimeng, built-in automatic gain control (AGC) circuit designed from
Adaptation in the bank, Prison, the examination room, shopping malls, industrial production, and other places eavesdropping Shiyin, A small noise, high-fidelity, wide operating voltage range, power consumption small, transmission distance and other advantages
A new sensitivity to adjust the pickups, TV monitoring, security systems supporting the use of the best products, and with the use of cameras to achieve synchronous video and audio
Monitoring of: 5 - 150m²
Signal transmission line With a core line with the best shield, (clockwise movement is to turn up the volume)
Connect method: (KJ-008)
1, +12V: power '+'
2, GND: power '–'
3, A out: audio system input port

Electronically parameter:
Power supply: DC 6 - 12V
Current consumption: 12mA
Frequency range: 200Hz to 10kHz
Frequency response: 2.5dB
Output impedance: 600Ω
Output level: 0 - 6Vpp
Size: Φ = 69mm, h = 39mm
Weight: 35g