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Ships within 48 hours · Estimated delivery Aug 29 - Sep 3
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Description
Klein Tools ET40 Digital AC/DC Voltage Tester 12 to 240V AC, 1.5 to 24V DCProduct Highlights Product Summary Klein Tools ET40 is an Electronic AC DC Voltage Tester. It features indicators for positive and negative DC polarity, and tests DC voltages as low as 1. 5V. It tests AC voltages 12 240VAC. Excellent for checking, verifying or troubleshooting common residential electrical wiring in electrical outlets, light fixtures, doorbells and more. It operates on 2 x AAA batteries. Features Voltage Tester for AC voltages from 12V
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- Free Standard Shipping on $100+ Orders to the USA.
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Best in 7 days
Best in 7 days
4.8 ★★★★★
Based on 955 reviews
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Product Reviews
★★★★★ 4
Good, super useful - worth the money
Works well. I use it with a mouth guard that helps with grinding my teeth and this product seems to protect my gums.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
★★★★★ 5
Biotene WORKS
Dry mouth happens at night because of my cpap. My dentist recommended Biotene and it was a great relief for my dry mouth problem. Highly recommended!
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Reviewed in the United States on May 12, 2026
★★★★★ 5
A Gel that's convenient and effective
After using the Biotene gel for several nights, I am happy that I bought it. The product is convenient to use and effective. My dry mouth was leaving my tongue parched at night. This gel solved my problem. I highly recommend it.
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Reviewed in the United States on April 24, 2026
★★★★★ 3
It’s ok in a pinch!
This works good in a pinch; however, I don’t see that it provides a significant timeframe of moisture. It wears of quick.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Best dry mouth no taste long lasting travel
I’ve used the rinse , spray lozenges and gum, along with regular chewing gum - gargled with salt water and consumed more liquids than any human should to
no avail with dry mouth. Found this - tube is small enough to travel w and it truly is flavorless and lasts rather long
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Reviewed in the United States on April 15, 2026
