Specifications :                                               Color: blue/yellow/red/orange/black  Length: 130mm  Material: ABS  Measuring range: 12-220V             Package list:  1 x digital voltage tester                           Features:  --- Multifunction: Can be used to detect null line, phase line and continuity of AC/DC voltage.  ---Clear display: With LCD display, easily to get the result at a glance.  ---Safe to use: For voltage testing, just need hold the tester pen and touch the direct test button.  ---Widely used: Ideal for circuits detection and home appliance repairing.                           Warm tips:  ---The item can be used for AC circuits and DC circuits testing, the voltage range from 12-220V  ---Please do not disassemble by yourself.  --- For break detection: Move along the phase line, when there is nothing shows in the display Window, is the breakpoint.  ---For detecting AC voltage and null line, when nothing shows in the display screen, is the phase line.