Features: Achieve precise electric detection with our professional electrical tester, featuring a 100 500V ranges and ±(0.01% + 1) accuracy for stable identification of live and neutral wires in demanding electrical work. Crafted from industrial grade steel and a strong copper cap, this robust electric tester offer superior effect resistance, enhanced sensitivity, and long lasting performances in harsh environments. Designed for electricians, maintenance professional, and enthusiasts, this essential electrician tool ensures safety and efficiency in routine electrical inspections and troubleshooting tasks. Use this portable electric detector effectively on construction site , industrial facilities, or home repair projects to quickly assess electric existence and wire configurations for enhanced workflow safety. The built in light illuminates brightly without batteries for fast electric indication, while the clip facilitates easy carrying, making it a dependable choose for frequent electrical testing. Specifications: Component : steel electric measurement ranges: 100-500V Measurement accuracy/levels: ±(0.01% + 1) Length: about 14cm/6inch Width: about 2cm/1inch Thickness: about 1.5cm/0.6inch Package Includes: 5xElectrician meter Pen note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.