Frequency meter

{"cid":"167968","pid":"27260027","pimg_url":"\/\/img1.tradegrowthhub.com\/b0\/06\/1d625a1ff239\/product\/98093748_s-w400xh400.jpg","name":"193UI-9K1 single phase 3 phase current-voltage frequency meter, 0-300v digital voltmeter with RS485 193UI-9K1","attrs":{"Price":"Negotiable","MOQ":"1.0 Pieces","Delivery Time":"Negotiable","Brand":"Blue Jay"}}