[Dual Mode]: This voltage detector has manual/automatic mode, it is convenient to detect and indicate the existence of AC voltage in automatic mode, or for more occasions in manual mode. Stepless adjustable sensitivity: The sensitivity of this detector can be adjusted to any value according to your needs. When adjusting to the low sensitivity, it can more accurately distinguish the specific situation in complex lines. 8 LED indicators in 3 colors: This detector can intelligently judge the power of the detected voltage by lighting automatically LED indicators of different colors and quantities. [Live/Neutral Wire Distinction]: Safely distinguish the live wire and locate the breaking point of the live wire by comparing the tension strength detected. Spotlight design: Spotlight design is convenient for testing in dark environment. The detector will automatically power off if there is no operation within 5 minutes.