PN-8LP is a Portable pen-type non-contact P/N checker by Napson.
Principle: Photovoltaic effect with the 650nm laser diode
Power supply : DC1.5V(size AA alkaline battery), 300mA
Display of judgement : P(red) or N(green) LED lamps
Sample sizes
Possible size to laser measurement
Measuring range
PN Checking range in resistivity : 0.02~5,000Ω・cm