Features FREQUENCY TEST: This panel meter is designed for measuring the frequency in an AC network, has a wide range of 45 to 55Hz. HIGH ACCURACY: This frequency tester has class 1.5 accuracy, high stability, clear scale, very convenient and practical. WIDE APPLICATION: This frequency meter is mainly used in industrial and mining enterprises, metallurgy, chemical industry, electric power, complete equipment, and various electronic control devices. EASY TO USE: This frequency meter can be installed on the panel for control and power distribution systems, compact and light, easy to install and use. ABS SHELL: This frequency gauge adopts ABS plastic shell, which has high strength and is not easy to be damaged. Specification: Item Type: AC Frequency Meter Material: ABS Voltage: AC 380V Scale Range: 45-55Hz Accuracy: 1.5 Class Size: Approx. 72x72mm/2.8x2.8in Package List:1 x AC Frequency Meter1 x Accessory Package List 1 x AC Frequency Meter 1 x Accessory