Serial reader digital

Size:
Material: Plastic
Features: Digital

How does this tiny and compact line reader perform?!
* adjustable according to the size of the finger
* with a battery (can be replaced with a screwdriver)
* with the large Count button you can turn on and add lines (the number of lines cannot be reduced )
* with the small Reset button, the number of rows can be reset to zero
* automatically switches approx. Off after 1 min (the last row number is remembered by default. When you turn it on again, the last row number is in front)