... products in production line DR series Digital Resistance Meter with auto judgement(0.01-100 Ohm) The principle: ... built when indicated, with NG OK or HI LO GO output control,OK means auto reset,NG means ... widely used in eletronical production line for control of auto inspection, simple to operate, and practical.2, Signal ... Peter Liao) DR series Digital Resistance Meter with auto judgement(0.01-100 Ohm)