Its delicate 166mm lightweight design ( 84g ) with rechargeable battery eliminates toolbag clutter while laboratory grades ±5 % voltages accuracy for fieldwork efficiency The Rechargeable voltages Tester Pen combines contactless AC voltages detection ( 12-300 V ) with precise contacted live wire verification , featuring a color LCD for quick environmental temperature and voltages readings Equipped with double mode , a LED flashlights , and shock resistant ABS housing , this multifunctional electrical tester pen ensures efficient alerts via visual / hearable warnings in low light or noisy environment Ideal for inspecting outlets , terminals strips , or automotive circuits in residential repairs , industrial installations , or urgent scenario requiring rapid voltages verification Produced for electricians , maintenance technicians , and professional seek a pocket sized voltages detectors to streamlines electrical diagnostics and live wire breakpoint tracing, Manufacturer: BULAIDAI