Feature 1Induction Detection: in-built sensor, it will flash green light and alarm you when it detecting the AC voltage. 2Zero/Live Wire Detection: insert the pen into the socket to detect zero/live wire, green light flashes and sounds up when detecting live wire. 3Breakpoint Detection: moving pen along with the wire, sound and light alarm will stop once there is breakpoint. 4Safety Guarantee: made of ABS insulating material to prevent electric shock hazard, greatly improved security levels. 5H/L/O Detect Range: three gear to choose from according demand for detecting Fire-Neutral line/Continuity/Battery/Non-contact AC Voltage detection. 6Multifunctional Induction Test Pencil: sound and light alarm, low power consumption, compact design, safe to use and easy to carry. 7Practical Test Pen: perfect for testing power cables, circuit breakers, wall sockets, junction boxes, fuses, etc. Really a professional tool for electrician, home, office, electric industry, and more. The Electric Non-contact Pen Tester allows you to test AC/DC voltage, breakpoint, continuity, battery, leakage detection, etc. It is made of safety materials with sound and light alarm, perfect for electrician to test power cables, circuit breakers, wall sockets, junction boxes, fuses, etc. Features: Induction Detection: in-built sensor, it will flash green light and alarm you when it detecting the AC voltage. Zero/Live Wire Detection: insert the pen into the socket to detect zero/live wire, green light flashes and sounds up when detecting live wire. Breakpoint Detection: moving pen along with the wire, sound and light alarm will stop once there is breakpoint. Safety Guarantee: made of ABS insulating material to prevent electric shock hazard, greatly improved security levels. H/L/O Detect Range: three gear to choose from according demand for detecting Fire-Neutral line/Continuity/Battery/Non-contact AC Voltage detection. Multifunctional Induction Test Pencil: sound and light alarm, low power consumption, compact design, safe to use and easy to carry. Practical Test Pen: perfect for testing power cables, circuit breakers, wall sockets, junction boxes, fuses, etc. Really a professional tool for electrician, home, office, electric industry, and more. Specifications: Material: ABS Detect Range: H(high induction), L(low induction), O(high induction with direct contact) Sound/Light Alarm: Yes Power Supply: 2 * AG13 battery Item Size: 141 * 18.6 * 16mm / 5.55 * 0.73 * 0.63in Item Weight: 22g / 0.78oz Package Weight: 35g / 1.23oz Package Size: 20 * 9.3 * 2cm / 7.87 * 3.66 * 0.79in Packing List: 1 * Electric Voltage Tester Note: Please allow 1-3mm error due to manual measurement. Color may be slightly differ from the pictures shown due to photograph light, the display monitor or other reasons. Please in kind prevail. Thanks! Package List 1 * Electric Voltage Tester Note: Please allow 1-3mm error due to manual measurement. Color may be slightly differ from the pictures shown due to photograph light, the display monitor or other reasons. Please in kind prevail. Thanks!