⚡【Precision & Multifunction】Continuity Tester accurately measures DC voltage (200mV–600V) and true RMS AC voltage (2V–600V). It supports resistance testing (0.1Ω–20MΩ), diode testing, and continuity testing, with an audible buzzer when resistance is below 50Ω. DC voltage accuracy reaches ±0.5%, and the auto-ranging design enhances operational efficiency. ⚡【Easy Reading】Voltage Tester Digital is equipped with a 12mm high-character LCD display supporting 1999 counts. With both backlight and front LED flash light, measurements can be clearly read even in dimly lit environments. ⚡【Compact & Durable Design】Electrical Tester features a compact pen-style body measuring only 235 x 54 x 30mm and weighing about 200g, making it highly portable. Its drop-resistant housing is specifically designed for on-site work environments such as electrical engineering and maintenance. ⚡【Safe & Industrial-Grade】Electric Tester Pen is CAT III 600V safety certified, featuring double insulation (Class II protection) and overload protection. It is suitable for both household and on-site electrical inspections, ensuring peace of mind during use. ⚡【Ready to Use】Pen Multimeter includes data hold and auto power-off functions(15 min of inactivity). It comes with two AAA batteries and an English manual, allowing you to start measuring immediately upon receipt. BTMETER provides lifetime technical support for a worry-free user experience.