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Precision maintenance instrument

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Product Details

Product Overview:

The F-999B is a high-sensitivity sound detector. It features a metal receiver combined with a high-performance metal probe for exceptional sound detection capabilities. The high-quality earphones ensure clear and crisp audio output. Equipped with a built-in lithium battery and a unique FM transmission function, it is easy to operate and portable.  

 

Operation:

  1. Insert the earpiece into the earphone jack and the probe into the MIC jack.  
     
  2. Rotate the volume/power switch clockwise to turn on the device. The power indicator light will illuminate.  
     
  3. Adjust the position knob to select the best effect among the ABC modes.
  4. The F-999B has a built-in FM transmission function. Insert the antenna into the FM jack to activate this feature. The transmission frequency is approximately 100MHz.  
     

Precautions:

  • During charging, the charging indicator light will turn red. When fully charged, the red light will automatically turn off, and the green light will stay on. Please charge the device in the off state to avoid damaging the machine.
  • The probe must be placed firmly on the surface. Avoid dragging the probe horizontally to prevent damage.
  • When using the probe, adjust the position knob ABC to achieve the best effect, and use the volume knob to fine-tune. When using the probe, set the position knob to D and do not adjust it. Adjust the volume knob.

Product Features:

  • All-metal body with exquisite workmanship, making it a precision instrument for professional use.