AUTOOl Power Circuit Probe Short Circuit Tester 6V-30V DC Test Light Electrical Tester Self-Test Circuit Tracer & Analyzers with LED Light Overload Protection

【Test Applications】With the BT250 automotive circuit tester, you can test for voltage and polarity/continuity/signal circuits/bad ground contacts/short and open circuits. And most importantly, you can also use it to check the on/off of switches, relays and diodes, fuses and circuits, activating electronic components in your hands/in your vehicle/with a ground. It is the best probe tester to reduce the diagnostic time of all 0-70 volt vehicle electrical systems. 【4 Adjustable Modes】The automotive test light supports 4 working modes: Voltage, Resistance, Diode Test, Audio Tone mode. Voltage detects the maximum and minimum voltage, supply frequency and duty cycle of the circuit under test. In addition,the circuit tester can also detects the resistance between the circuit probe under test and the auxiliary ground; Diode Test can quickly test the operation of the diode assembly and determines if it is conducting. The last mode is the audio tone mode. 【Wide Vehicles Application】 Power circuit probe tester can support 0-70V cars, boats, trailers, ATV, motor homes and many other vehicles. With the ability to power components such as radiator fans, starter motors, relays, window regulators, windshield wipers, etc. Powered by the car battery or cigarette lighter, no extra battery or cable required. 【Illumination Function】The test light probe built-in flashlight is bright enough to light up your work area. When the two alligator clamps respectively clamp the positive and negative ends of the battery, the flashlight immediately lights up, which is more convenient for you to test at night or in dark areas. 【Circuit Overload Protection】The BT250 automotive circuit tester provides more safety for the user because it is protected by the inner circuit breaker. When the current exceeds 10A, the tester will automatically disconnect to protect the circuit to reduce unnecessary losses. The disconnection time varies with the load current. 【Easy to Read】The circuit tester combines an LCD digital backlight display with an LED red/green indicator light design, making it easier to read the voltage and current values of the screen and distinguish between positive and negative electrodes. 【Three Years Warranty】For any quality problems. If BT250 has any defect, we will provide new replacement or solutions for our customers without delay, and provides lifetime technical support. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours.