Test Voltage:AC100-500V /Digital:12-220VSize:135mm*23mm*17mmInduction test to find phase line,ground lineand breakpoint of phase lineNo need for batteries.What is an INGCO Test Pencil HSDT1908 ?A test light, test lamp, voltage tester or men’s tester is a piece of electronic testing tools utilized to determine the presence of electricity in a bit of equipment under test.Properly created test lights include features to protect the user from accidental electric shock.INGCO POWER TOOLS AND HAND TOOLS – Test Pencil HSDT1908 used to energy-saving products and also easy to operate.Features of INGCO Test Pencil HSDT1908 :It is made of chrome vanadium alloy steel and ABS insulating plastic, high hardness, wear and durability. Insulated handle for ergonomic design.Soft handle for easy and comfortable grips, handy tester for quick and easy to test AC/DC voltage.Press the “inductive break point test” button, and the charged symbol is the phase line.If there is a breakpoint in the live circuit, move the test pen, the point where the trusted symbol disappears is the breaking point.Packed by plastic hanger.Pros and Cons of INGCO Test Pencil HSDT1908 :Pros :High Quality.Pen-sized.Easy To Use.Cons :SO far, No negative issues have been observed.