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V2 profession Non-Contact Voltage Tester V2 Voltage Tester is designed with dual testing range (12V-1000V/48V-1000V) for Live/Null wire Judgment, Adjustable sensitivity for more complex work environments ➤ Adjustable Sensibility: When the manual mode is on, you can use the rotary knob to adjust the detection sensitivity. The low-sensitivity mode can more accurately determine field conditions in complex lines. In the high-sensitivity mode, the condition of walls and hidden lines can be detected. ➤ Auto Shut-down to Save Power If the device is not operated within five minutes, it will turn off automatically ➤ NCV Signal grading system: If the instrument detects a low AC signal, the green light is on; If a high AC signal is detected, both green and blue lights are on; If a dangerous AC signal is detected, the lights (green, blue, red) are all lit; The buzzer will generate a slow-to-fast-phase alarm. ➤ Build-in Flashlight: LED light design makes it work even under dark evironment. It is an ideal tool for electiric worker. ➤ Safety: The volt tester is complied with the CE CAT III 1000V/ CAT IV 600V, and it is also equipped with an audible and visual alarm to guard your safety.