... switch or AC signal, etc), contact switch, encoder, etc, used to measure power frequency (AC 0-- 600V), range: 0.01Hz--100KHz ( ... , etc; The instrument has several parameters setting function, easy to operate.2, For other specialize teser for pulse width, duty ... cabinet, power sub-station, industrial automation, etc.. In addition to supply MYPIN brand products, We have successfully cooperate in more ...