[#4]

Feature:
1. Good Features: Equipped with LCD, noise reduction switch (bounce to filter some noise), switch, headphone jack, charging and sensor jack.
2. On Screen Display Knob: Turn counterclockwise to decrease display sensitivity, and clockwise to increase display sensitivity.
3. Reliable Performance: Frequency selection switch (200?300Hz). Volume adjustment knob. Sensor handle with switch control design, easy to use.
4. Battery Type and Host Size: Lithium ion battery, model 523412, 8.4V, capacity 1000mAh. Host size is18.5x11.3x8.5cm / 7.3x4.4x3.3in.
5. Product Parameters: The magnification is from 0?100dB. Frequency binning 1?4 files 200HZ?3000HZ continuously adjustable. Working current 60mA.


How to Use:
Sensor handle:
When the sensor is moved, the sound of pressing the button disappears to avoid strong sound impact to protect hearing.
1: Outdoor sensor selection switch, press 0 to turn on the normal sensitivity sensor in the sensor, press to turn on the high sensitivity sensor in the sensor.
2: The mute switch, the sound in the earphone disappears when it is pressed, and the sound recovers when it is bounced.
External sensor: special for outdoor pipeline leak detection, built in ordinary sensor and high sensitivity sensor, select high&n