Specification Brand : KELFEEAO Label : KELFEEAO Manufacturer : KELFEEAO PartNumber : KELFEEAOnt1rieyax7 ProductGroup : BISS Basic ProductTypeName : ELECTRIC_CIRCUIT_TESTING_DEVICE Publisher : KELFEEAO SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/4140IO9uNOL._SL75_.jpg SmallImage_Width : 75 Studio : KELFEEAO Title : 45-55HZ AC 380V Frequency Tester, AC 380V Meter Industrial Frequency Meter Used in Industrial and Mining Enterprises, Metallurgy, Chemical Electric Power