About dual-range adjustable sensitivity - The electrical tester comes with high sensitivity mode (AC 12V-1000V) and a low sensitivity mode (AC 48V - 1000V). It shows you whether there is voltage or not, also indicates that the voltage is high or low. After turn on the non contact voltage tester, the default mode is the low sensitivity test.
- Distinguish live wire from neutral wire: Separate the neutral wire and live wire as soon as possible for detection. If they cannot be separated, they can be distinguished according to the intensity of the signal detected by the circuit tester. The one with strong signal is the live wire(tip will flash red light continuously), and the one with weak signal is the neutral wire(the tip will flash yellow light continuously).
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Sound & Light Alarm - When the voltage is detected, the voltage tester will beep at a low frequency first, and the tip will flash yellow light continuously. Get closer to the detected object, the voltage tester pen will beep with a higher frequency, and tip will flash red light continuously.
- Low battery indicate: When the battery voltage is less than 2.6V, the Power On/Off Switch will flash for 3 times, and the non contact voltage tester will automatically shut down after the buzzer beeps once. When the low battery indication appears, please replace the battery in time to avoid affecting the normal use of the voltage tester pen.
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Bright LED Flashlight The electricity tester can use as an emergency flashlight, which is especially useful in the dark working area. When the voltage tester is turned on, press the “S” button for 3 seconds to turn it on or off. After about 5 minutes, the flashlight will auto-off to extend battery life.
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