Reliable detection of incorrect wiring, contacting errors and cable interruptions Quickly find defective fuses, lamps, Cables and short circuits Through and semiconductor testing via LED?s and test buzzer Display via three yellow LEDs: 0 - 100 O / 1 kO / 10 kO Acoustic display via test buzzer for testing low-impedance resistors up to approx. 100 O External voltage display: 6 - 400 V (LED?s/ test buzzer) Polarity test external conductor test (phase) over 4 mm measuring tip (red phase LED flashing) Non-contact phase tester/cable break detector (red phase LED flashing) Precise and luminous high-performance LED flashlight buzzor volume and brightness of the LED flashlight individually 4-stage adjustable Integrated self-test for LED?s, LED flashlight and buzzer battery undervoltage indicator Required battery set: 3 x 1.5 V Mignon / Magnetic holder and belt clip on back of housing Measuring category: CAT lll 300 V impact