The internal spindle of this machine is equipped with photoelectric sensors. It is strictly forbidden to knock the two ends of the spindle, and please strictly control the axial serial movement of the spindle, otherwise it will damage the photoelectric sensor and cause counting errors or not counting.
The circuit of this machine is an electronic circuit, please keep away from strong electromagnetic interference such as welding machine, electromagnet, radio transmission equipment, etc., so as not to affect the normal count.
FY-130 counting range is 0-9999.9 laps, and counting error is less than 0.1 laps (1/10 count function).
If you have any questions about the product,please feel free to contact us,we will try our best to slove your problem^_^