Features 1. Multifunctional mini digital tester signal indicator that measures alternating current, voltage, and frequency simultaneously 2. Wide measuring range: AC 0-100A, 60-500V, and 20-75Hz 3. High-brightness, easy-to-read 3-digit LED display for clear readings 4. Compact 2.2 x 2.2 inch square panel with cylindrical main body design 5. Suitable for signal indication, alarm signals, and accident signals in power systems, telecommunications, machine tools, ships, textile, printing, and mining equipment Specifications Color: Blue, Green, Red, White, Yellow (available as options) Material: Electrical components Voltage: AC 60-500V Current: AC 0-100A Frequency: 20-75Hz Item Size: 55 x 31 x 31mm / 2.17 x 1.22 x 1.22in Item Weight: 39g / 1.38oz Package Weight: 44g / 1.57oz Package Size: 7 x 3.5 x 3.5cm / 2.76 x 1.38 x 1.38in Packing List 1 x Digital Meter