Features: 100% brand new and high quality Support output voltage 0-5.5V, current 0-20A/30A. This instrument can detect various short circuits on the circuit. The instrument can detect and repair short circuits in seconds. It can be used to detect short circuits on cell phones and laptops. Short circuit recovery/overheat protection/overcurrent protection/overvoltage protection/voice prompt/automatic recovery/safety and efficiency/positive and negative polarity recognition Package Includes: 1 Set x Short Circuit Detector Specifications: Item: Short Killer Detection Type: TS 20A / TS 30A Size:approx 154x85x38mm/6.06x3.34x1.5in Fit for: Phone Computer Motherboard note: TS-20A current cannot exceed 20A TS-30A current cannot exceed 30A The probe of the test lead is very sharp, please pay attention to safety, this test lead can also be used on the multimeter. There is high voltage in the instrument, non-professionals should not open it without authorization, the instrument has a large current output, and it is strictly forbidden to test for a long time. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow 0.5-2 cm differences due to manual measurement.