-001 s representative for the Chinese market, the same models in Japan sales of no-001.
"-001&nbsel input signal only leakage, or NPN. This
type of model input common Terminal is "COM" Terminal. -001 In addition, the suffix for models ES/UL, ESS/UL, models, input on the public side is "S/S" terminals, such models can use different ways of wiring, selective leakage type (NPN) or source (PNP).