AC DC 12V-220V Voltage Tester Pen LCD Digital AC/DC Voltage Detector Continuity Voltage Detection Pen Inductance Detector Sensor Features. 1. Test pen can test 12-250V voltage, also can indirectly test AC neutral, phase and breakpoint. Display up to 220V. 2. Pre the "direct" button to test the AC voltage directly 3. Pre the "inductance" button to test the DC voltage 4. Use the tip of the pen to test the AC phase and neutral lines, if there is a display, then the phase line. 5. Move the pen tip along the phase line, if there is no display, it is a breakpoint 6. Please do not pre the two buttons at the same time. Parameters. Color: green Material: engineering plastic shell Length: 13cm Weight: 18g Package includes. 1 * voltage pen