The Eclipse NT-320 Contact Type Voltage Tester is designed for safe and efficient voltage detection ranging from 12 to 300VAC and is suitable for live wire testing of AC voltages, breakpoint testing, battery polarity and continuity testing. The NT-320 features a built-in white LED illumination light, enhancing visibility in low-light conditions and is equipped with a large LCD digital display for clear and accurate readings. Additionally, Smart Detection and its Data Hold function makes voltage reading a breeze. The NT-305N ensures users safety with its non-conductive ABS housing and provides a visual and audible alarm if voltage is present. Its built-in pocket clip and compact design makes it highly portable and is ideal for both professional and personal use. It's powered by one 1.5V AAA battery (not included).