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With the Facom AV.HT1CPB voltage tester screwdriver, you can quickly verify whether an electrical circuit or terminal is live. Featuring a wide detection range of 90 to 480 V, it lets you test wall outlets, junction boxes, and wiring without carrying a bulky multimeter. The indicator light built into the transparent handle illuminates immediately when ac voltage is present, giving you clear visual confirmation. Combining voltage detection with practical fastening, its durable slotted blade is made from chrome-plated vanadium steel with a hardened black phosphate tip. This allows you to tighten or loosen slotted terminal screws effortlessly during electrical maintenance and installation tasks.