45-65Hz AC 220V Frequency Tester Analog Panel Meter 1.0 Accuracy Class
Specification: Description: Black character, white background, square panel mount, analogue display. Designed to measure frequency in A.C. electrical power system. Installed on the display panel and switch panel for the control system and power distribution systems. Used widely in the electronics, automatic control system, mechanical equipments, shipbuilding, aviation, etc.