Features: NonContact Voltage (NCV) technology. This pen alerts you with increasing urgency of sound as you approach live voltages, allowing for safe and contactless voltage detection. The inductions test pen caters to all your testing needs, making it for both DIY enthusiasts and professional electricians. Its multifunctional designs ensures you can handle a variety of electrical tasks efficiently. Quickly and accurately identify electrical faults with the pocket tester pen. Its NCV detects the signals strength of wire, helping you pinpoints the exact location of circuit breakpoints without direct contact. Specifications: Component:ABS Size:Approx.28x160mm/1.1x6.3inch Model:B15 Testing Ranges:24-250V Package Includes: 1pc Voltage Tester note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.