About this item Dual sensitivity and range: The voltage tester can detect voltages in two voltage ranges: 12V-1000V or 48V-1000V (adjusted by "S" key). The probe's NVC sensor recognizes the voltage and displays it on the LED indicator. It meets many needs in residential, commercial and industrial environments. LED indicator and phase identification: During the test, the voltage intensity is displayed on the indicator. The indicator lights up red or green. If the red light is flashing, a fast timeout alarm indicates that the phase has been detected. If the red light does not flash, it means the neutral has been detected. Non-contact voltage tester: the isolated housing of the voltage detector ensures safety. As the voltage signal strength changes, the indicator increases or decreases and the frequency of flashes and beeps becomes faster or slower with the signal strength. Auto shut-off and lantern function: automatic shut-off allows you to save and control electricity Equipped with a flashlight at the tip, it allows its use in the event of a power failure or in dark environments The pocket clip makes it easy to put on. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.