AC Frequency Meter, Yeeco AC 24-500V 0-99Hz Frequency Counter 3pcs Green Red Yellow LED Signal Indicator Light Panel
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AC Frequency Meter, Yeeco AC 24-500V 0-99Hz Frequency Counter 3pcs Green Red Yellow LED Signal Indicator Light Panel
Power supply: AC 24-500V Testing range: 0-99Hz Size: (length) 51mm x (φ)29mm/2"x1.14" Install opening: (φ)22mm/0.9" Height of the display digit: 11mm/0.4" Life time: 1 million/times