Features Portable design: the frequency meter is a pointer type, with clear scales and a fine tuning button, easy to use, which is convenient and practical. Easy installation: equipped with mounting screws, this frequency meter for square plates is small and compact, easy to install and takes up little space. APPLICABLE SCENES: Our frequency meter can be used in industrial and mining equipment, metallurgy, chemical industry, electrical energy and various electronic control devices. Scale range: the scale range of the AC frequency meter is 45-55 Hz, it can simultaneously display the change trend of the measured electricity. Plastic casing: the meter housing is made of excellent ABS material, has good toughness, wear resistance, ageing resistance and long service life. Specification: Item type: frequency meter. Model: 380HZ Voltage: AC 380 V. Scale range: 45 - 55 Hz. Accuracy: Class 1.5 Colour: black. Main material: ABS. Advantages: can indicate the trend of measured performance. Application: mainly used in industrial and mining companies, metallurgy, chemical industry, electricity, complete equipment and various electronic control devices. Package list: 1 x frequency meter. 2 x screws Package List 1 x Frequency Meter 2 x Screws