LED Frequency Meter Model:SF-LED96-3,SF-LDE72-3 Accuracy:Class 1.5 Volt.:110V,220V,380V Frequency:45~55Hz ... safe,fast,robust,side by side. 2. Accuracy: Class 1.5.3. Voltage: 110V,220V,380V.Frequency: 45~55Hz, 45~ ... 47~53Hz, 57~63Hz, 44~56Hz,54~66Hz.5. Case: Non-combustile ABS plastic material is used for ... detailed products information or have further enquiry, welcome to contact us. LED Frequency Meter