Best in 7 days
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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26
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Description
SLM-30B Professional Sound Level Meter with Smart Bluetooth Function 20000 Datalogging Max/MIN/Hold AlarmIntroducing our Bluetooth Sound Level Meter the perfect tool for accurately measuring and controlling sound levels in any environment. Equipped with Bluetooth technology, this meter can effortlessly connect to your smartphone via the dB Tester APP. Stay connected and conveniently monitor sound levels remotely. Provides accurate readings in a wide range from 30 to 130 dBA with an impressive 1. 5dB Accuracy and 0. 1dB Resolution, you can trust the
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.1 ★★★★★
Based on 2247 reviews
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Product Reviews
★★★★★ 5
Great for protecting my maps
Size: Regular - 12 x 16 Inches
Fits my exploring maps just right. Heavier duty than expected. Ziplock closure is tight and should last for years.
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Reviewed in the United States on October 14, 2025
★★★★★ 5
Great product
Size: Large - 16 x 22 Inches
Size and durability are great. My husband used these while at a military training
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Reviewed in the United States on April 30, 2026
★★★★★ 4
Terrific addition to your backpacking gear
I like this map holder for its versatility in holding different size maps. Once sealed, it was very effective at keeping moisture out and protecting the maps. I originally used this on a 13K mountain ascent. Worked great. The only thing that can be tricky at times is sealing the top. It's not as easy as sealing a typical zip-loc kitchen bag, takes some doing to get it to seal.
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Reviewed in the United States on May 26, 2025
★★★★★ 5
Best Map Case Ever!!!
Size: Regular - 12 x 16 Inches
Best Map case in the market! Field tested and keeps everything dry. The size is fantastic and you can run paracord through the rings. I would recommend this to anyone that uses a map. You definitely pay for what you get and that's high quality and functionality.
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Reviewed in the United States on August 13, 2025
★★★★★ 5
Just right for protecting river trip guides
Size: Regular - 12 x 16 Inches
Nice and durable - heavy duty. Getting ziplock to close is a pain though - lick or spit helps.
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Reviewed in the United States on December 19, 2024
