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 4555Hz, 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 MeterModel: 380HZVoltage: AC 380VScale Range: 45-55HzAccuracy: Class 1.5Colour: BlackMain Material: ABSAdvantages: Can display the trend of the measured powerApplication: 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