Feature: 1. PORTABLE DESIGN: The frequency meter is pointer type, with clear scales and fine tuning dial button, easy to operate, which is convenient and practical. 2. SCALE RANGE: The scale range of the AC frequency meter is 45‑55Hz, it can display the change trend of the measured electricity at the same time. 3. PLASTIC CASE: The meter case is made of excellent ABS material, has good toughness, wear resistance, aging resistance and long service life. 4. APPLICABLE SCENES: Used in industrial and mining equipment, metallurgy, chemical industry, electric power and various electronic control devices. 5. EASY INSTALLATION: Equipped with mounting screws, this square panel frequency meter is small and compact, easy to install and takes up little space. Specification: Item Type: Frequency Meter Model: 380HZ Voltage: AC 380V Scale Range: 45-55Hz Accuracy: Class 1.5 Colour: Black Main Material: ABS Advantages: Can display the trend of the measured power Application: Mainly used in industrial and mining enterprises, metallurgy, chemical industry, electric power, complete sets of equipment and various electronic control devices.. Package List: 1 x Frequency Meter2 x Screws