Decibel Meter, TopTes TS-501B Sound Level Meter with 2.25” Backlit LCD Screen, Portable SPL Tester with A/C Weighted, Range 30-130dB, MAX/MIN, Data Hold, Use for Home, Noisy Neighbor, Factory - Orange

Key Specifications

Battery Description
AAA
Device type
Decibel meter
Sound range
30–130 dB
Weighting
A/C modes
Display
2.25″ backlit LCD
Accuracy
1.5 dB

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2007 reviews
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Decibel Meter, TopTes TS-501B Sound Level Meter with 2.25” Backlit LCD Screen, Portable SPL Tester with A/C Weighted, Range 30-130dB, MAX/MIN, Data Hold, Use for Home, Noisy Neighbor, Factory - Orange

The BIAOLINGTONG 6-Pack EMF & RF Radiation Protection Stickers are designed to be simple, adhesive labels that claim to reduce exposure to electromagnetic fields (EMF) and radiofrequency (RF) radiation emitted by mobile phones, tablets, and other electronic devices. They are small, portable, and easy to apply — intended for users who want a non-technical approach to managing EMF concerns.

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Key Features

2.25-inch LCD Screen with Backlight: This TS-501B sound level meter is measured noise levels are expressed in decibels and displayed on the 2.25-inch LCD screen, it easy to read on a big display design. Long press the backlight button to turn on a backlight, making it easy to view even in dim light
Decibel Meter with A/C Weighting: TopTes TS-501B decibel meter uses a precise condenser microphone to capture sound. It’s equipped with A-weighting and C-weighting facilities that measure noise levels from 30 to 130 dB with an accuracy of 1.5 dB, Frequency from 30 to 8000Hz. Perfect for monitoring noise levels in communities, home theaters, audio systems, automobiles, workshops, schools, offices, factories
MAX/MIN Measurement: The sound pressure level (SPL) meter has Max or Min measurement values to represent the maximum/minimum (high/low peak) value of the sound produced within a certain time, and the data hold function can freeze the current reading based on the sound measurement according to individual needs
Easy Use and Feature Packed: The non-slip side design ensures that the portable noise meter fits easily in the hand. TS-501B SPL meter is a battery-operated noise meter that comes with three durable batteries and has an automatic power off function to extend battery life. A low battery indicator will appear on the screen when the battery is low to remind the user to replace the battery in time
What’s in the Box: One TS-501B Decibel Meter, Three AAA Batteries, One User Manual, One Carry Case. The device has been factory calibrated to ensure high measurement accuracy and compliance with quality standards.

The BIAOLINGTONG 6-Pack EMF & RF Radiation Protection Stickers are designed to be simple, adhesive labels that claim to reduce exposure to electromagnetic fields (EMF) and radiofrequency (RF) radiation emitted by mobile phones, tablets, and other electronic devices. They are small, portable, and easy to apply — intended for users who want a non-technical approach to managing EMF concerns.

Key Considerations

1

EMF/RF Protection Claims — These stickers are marketed as a way to reduce electromagnetic and radiofrequency exposure from everyday devices. Universal Compatibility — Designed to be used on a wide range of electronics, including smartphones, tablets, laptops, and more. Easy to Apply — Self-adhesive backing allows you to place the stickers directly on the device surface. Quantity Pack — The 6-pack lets you place stickers on multiple devices or replace them over time. No Power Required — The stickers work without batteries, cords, or setup — just stick and go. Portable & Non-Invasive — Extremely small and lightweight, convenient for everyday use without adding bulk to your devices. Non-Scientific Approach — These products are marketed for general EMF awareness rather than technical measurement or mitigation backed by professional studies.

1

Easy Application — Simply stick onto devices for a low-effort approach.

2

Multi-Pack Convenience — Six stickers cover several devices or locations.

3

Portable & Zero Power Needed — No setup or charging required.

These factors represent the most critical aspects that will impact your satisfaction with this product.

Customer Reviews

Even works great for Pellet/AirGun sound characterization!
2025-12-14T07:13:18.923Z

Multiple configuration options are appreciated. For my use case, which I admit was internet-searched to not be valid -- actually does seem to work well and too expectation. My application is measuring the loudness of my PCP airguns. Conventional wisdom states you need something much more responsive. In this case, when selected on "FAST", "C" Mode, and MAX Hold seems to yield results that are very close to my PCP rifle's vendor's stated dB (approx 88-90). I get the same result, about 88-90 that drops off with distance (as expected). Overall I'm highly satisfied with the unit's perceived accuracy, speed, and overall usefulness. Additionally the large display allows the unit to be read at some distance away (easily readable within 1-2 meters) and one can turn on the backlight if taking measurements in lower light / dusk situations.

U
A Guy named Mike in Texas
A nice cheap sound level meter with only minor flaws
2025-12-14T07:13:31.003Z

I bought two different brand/models of sound meter. Since they can be found so cheap it was worth getting a second to compare results. In a room with a background reading of just under 40dB, using the slow update rate, both using the A weighting, thiis meter is typically within about 1 or 2dB of the other meter when reading:

U
DAVID A MAIR

Frequently Asked Questions

Final Verdict

The BIAOLINGTONG 6-Pack EMF & RF Radiation Protection Stickers offer a simple, non-technical option for users who want to place “protection” stickers on personal electronics. With easy application, multi-device coverage, and zero power requirements, they’re convenient and portable. However, they do not perform measurement or technical mitigation and are best viewed as a supplemental accessory rather than a scientific EMF solution.