Features :-With night vision.-Simple operation.-Brand new & high quality.-Item checks ge-neral el-ectric products, electronic leakage and broken line.-It's perfect for home use and handy when checking holiday lights.-Item checks wire and tells you which is hot (fire), which is cold (ground),and incredible, No battery needed.-Test range: 12~250V AC DC.-Material: Plastic, metal.-Dimensions: 16cm x 2.5cm x 1.5cm.How to use:This product is suitable for direct detection of 12V-220V AC and DC andindirect detection of the zero line, phase line of AC and the detectionof breakpoint.Voltage detection1 The final figures is the voltage value.2 It will indicate the lower value if not reach 70%of display value ofthe high value.3 Please touch the negative pole when test the voltage of DC.4 Inductance can be used when test the item with lower than 12V voltage5 It must be connected to ground or the zero when test the item with theinduction.Sensor detectionWhen detect line side by side, please increase the space between the linesor hand-hold the detected item.Break detectionMove along the phase line, when there is nothing shows in the displaywindow, it is the breakpoint.Package:1 x AC/DC Voltage Detector Pen