22mm LED Digital Display Electricity Hertz AC Frequency Meter Indicator Signal Lamp Lights Tester Combo Measuring Range 20-75Hz 100% brand new and high quality Model: 20-75Hz Indicator Pilot Light Frequency Meter Display Type: Digital Voltage: 110~380V AC Measuring Range: 20-75Hz Operating Temperature: -25 ~ +65 Material: PC & electrical components Dimensions: 28.3x51.4mm/1.11x2.02inch Color: Red, Green, Blue, White, Yellow Quantity: 1 Pc Note: 1.Please allow 0-3mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Electricity Hertz AC Frequency Meter