1pc AC 100V 220V 380V Panel Analog Frequency Meter Meter GaugeOOTDTYAC 100V 220V 380V Panel Analog Frequency Meter Meter Indicator 45-55HzFeatures: . Widely used in electronics, automatic control system, mechanical equipment, shipbuilding, aviation, etc. Installed on display panel and switch panel for control system and power distribution systems. Designed to measure frequency in the A.C. Electrical Power system. Villain, white background, square panel, analog display. Specifications:Color: White+Black Material: Plastic, You can mention about them Grade: 1.5Voltage: AC 220V Frequency: 45-55HzNote:Transition: 1cm=10mm=0.39 inch Please allow 0-1cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:1 × Analog Frequency Meter