TESMEN TM-510 Digital Multimeter 4000 Counts Smart Auto-Ranging Voltage Tester

• Amazon now offers the TESMEN TM-510 Digital Multimeter, now priced at $14.44.
• Prime members get free two-day shipping, and regular members get free shipping on orders over $35 within the contiguous U.S.
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Editor's Pick: If you have circuit issues at home or need to fix an appliance, this multimeter lets you skip the hassle of selecting ranges and settings—just turn it on and go. Switch to non-contact voltage mode, and it will alert you with sound and light when near a wire, making line safety checks a breeze. The screen has a backlight, and the battery compartment includes a built-in light, so you can see clearly even in dark corners. It comes with a storage pouch and batteries, so you're ready to work right out of the box.

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