SigmaProbe Digital Automotive SP1 Circuit Review

[GREAT TEST PEN] Digital SP1 used in 5-30V DC voltage tester, car fuse tester, automotive battery tester, probe tester, perfect for cars, trailers, vans, RVs, motorcycles, boats, etc.which is a must have tool for any automotive engineer, electronic engineer or circuits DIY and retire your old automotive test light. [THREE WORKING MODES] SP1 circuit light tester has a 5W replaceable test light bulb on the top. Just press the switch to choose LED digital display and the bulb working simultaneously(Fast test Mode), or either of them works(Computer-safe mode and bulb mode). Diagnose faults in different scenarios quickly. [ACCURATE ENOUGH& REVERSE POLARITY TEST] Upgrade SP1 auto electrical tester designed with digital led indication,eading your vehicle's voltage instantly and clearly during the day and night with high accuracy to ±0.15V. Not only that, you can attach the large alligator clip or a second probe to either negative or positive ground, red light indicates positive polarity and green light indicates negative polarity. [LARGE ALLIGATOR CLIP & TWO PROBES] The light tester designs with a large alligator clip and two sharp stainless steel probes. Large alligator clips can clamped to the car hitch more firmly,The second probe is convenient for taking electricity at the same time as the main probe in confined areas. [SAVED YOU UP SOME DOLLARS] Perfect Electric Lighter Tester can quickly detect the shorts/breaks of the electrical circuit and voltage measurement by yourself,save $5-30 for you each time.Recommend for any mechanic or for your household garage.we provides 18 months warranty and High quality customer service.