Safety Non-contact voltage detection and non-metallic pen body make sure you won't be shocked by electricity. The voltage detection pen complies with the latest EU safety standards, EN61010-1-2-030 1000V CAT III safety standards and complies with ROHS / REACH directive and other environmental certifications. Adjustable sensitivity The detection voltage detects the pen of the electromagnetic field generated by the alternating voltage more accurately and quickly determines whether the measured object has alternating voltage, and the detection pen can detect the electromagnetic field of different intensities by adjusting the sensitivity of the detect pen, thus accurately distinguish between neutral wire and live wire, can be used as a simple line detector. Great DesignFeatures 'a flashlight, convenient for maintenance in darkness.Made of high quality engineering plastic, pen body is hard, wear resistance and insulated.Testing voltage ranges from 12V to 1000V, which is suitable for home appliances. Multi-functionBuilt-in smart chips realize light sound alarm, automatic sensitivity, automatic shutdown, zero NCV and real-time line test and other functions.