Features Range from 60V to 500V: Square digital readout meters are useful devices for single-phase alternating currents ranging from 60V to 500V. LED 3-digit Display: The measuring instrument is a large square LED 3-digit display, which provides a clear display and is more convenient for us to read the data. Measuring Voltage, Current and Frequency: This multi-function meter can measure voltage, current and frequency with reliability and high accuracy, small size, light weight and easy to carry. Stable and Reliable Structure: The current measuring instrument adopts precise manufacturing technology and sensitive components, has a stable and reliable structure, and is practical. Easy to Use: The voltage measuring instrument is easy to use, just pass the load cable through the current transformer, which is simple and easy to operate. Specification: Item Type: Voltage current frequency meter Model: AD112-22 FVAH Color: Red, Green, Yellow, Blue, White (optional) Voltage Measurement: AC60-500V Current Measurement: 0-100A Frequency Measurement: 20-75 Hz Error: ± 2% Refreshing Speed: About 200ms/time Ambient Temperature: 0-50 (℃) Package List: 1 x Meter  Package List 1 x Meter