Description: Square LED Digital Voltmeter Ammeter Hertz Meter Signal Lights Voltage Current Frequency Combo Meter Indicator Tester. Display: voltage, current, frequency. Measuring voltage range: 60-500V AC Measuring current range: 0 - 100A Measuring current range: 20-75Hz Material: Plastic Quantity: 3x Red, 3x Yellow, 3x Blue, 3x Green, 12Pcs in total. Size Chart: Size: Approx. 20x28x51mm / 0.78x1.10x2.00inch Package Includes: 12 Pieces Square LED Digital Voltmeter Ammeter Hertz Meters Note: Please allow 1-3mm measuring deviation due to manual measurement. Due to the different monitor and light effect,the actual color of the item might be slightly different from the color showed on the pictures. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia