Features: Designed for electricians and DIY enthusiasts, these testers are essential tools for circuit testing and identifying live wires, suitable for a wide ranges of users. From household electrical maintenance to professional installations, these voltage testers accurately detect voltage levels, ensuring electrical safety in any setting. The compact size and built in LED flashlight make these voltage testers convenient for use in low light environments, providing ease and efficiency during electrical inspections. Equipped with digital display, the measurement results are displayed intuitively, which is convenient for users to observe and analyze. Multifunction breakpoint detection: In addition to the conventional line detection function, it can also quickly locate and disconnects the fault point by sensing the screen electric pen test function, thus improvingthe maintenance efficiency. Portable pen designs, easy to carry, simple to operate, suitable for home use or professional electrician for maintenance. Specifications: Material:ABS Size:Approx.155.5x24mm/6.12x0.94inch Color:Red/Black You need to bring your own 2xAAA battery AcVoltage range: 12-1000V v. Frequency: 50Hz/60Hz Alarm mode: acoustooptic alarm. Flashlight: white LED lighting Zerofires line judgment: according to the signal 36V/110V/220V. NCVsensitivity: you can adjust the sensitivity by pressing the sensitivity increase button. Sensitivity indication: indicated by alarm sounds with different frequencies and LED colors. Working temperature: 0~40℃ Storage temperature: -10~50℃ Humidity: < 95% Altitude: < 2000m Power supply: 2X1.5VAAA battery Product net weight: 70G Package Includes: 1x Electric Tester 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. Thanks for your understandings.