Overload Alarm & Reset:Automatically detects overloads with an alarm and resets power factor to zero for safe operation. High Safety Performance:Designed with high safety performance, ensuring reliable usage in electrical diagnostics. Versatile Voltage Range:Available in 5A, 10A, 20A, and 100A models, catering to diverse electrical testing needs. Wattmeter|HD Display & 6-in-1 Multifunction:Features an HD LCD screen for clear readings and 6 vital functions, including voltage, current, and power factor. The color of the transformer is random, no specified color is accepted Color: Black Material: plastic Package Contents: 1set x smart home 100A/22000W AC digital display power meter (with transformer) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.