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Description
FNIRSI Multifunctional Wall Wire And Metal Rebar Detector, WD-021. Automatic shutdown: after 5 minutes of no operation 2. Ferrous metal detection depth: 120mm 3. Non ferrous metal (copper) detection depth: 100mm 4. AC detection depth: 50mm 5. Detection depth of single copper wire: 40mm 6. Wooden block detection depth: 20mm in precision mode; 38mm in depth mode 7. Three modes, metal, cable and wood detection 8. Accurate detection, anti interference high performance module 9. Detection warning, indicator light,
1. Automatic shutdown: after 5 minutes of no operation
2. Ferrous metal detection depth: 120mm
3. Non-ferrous metal (copper) detection depth: 100mm
4. AC detection depth: 50mm
5. Detection depth of single copper wire: 40mm
6. Wooden block detection depth: 20mm in precision mode; 38mm in depth mode
7. Three modes, metal, cable and wood detection
8. Accurate detection, anti-interference high-performance module
9. Detection warning, indicator light, buzzer, and screen display prompts
10. Positioning mark, center hole design
11. Type-C charging, built-in 300mAh rechargeable lithium battery
12. Plush bottom pad, non-slip, wear-resistant and does not damage the machine
13. The sensitivity can be adjusted in real time according to needs. The lower the sensitivity, the higher the accuracy (please adjust according to the use environment)
14. High-performance anti-interference chip, reducing false alarms, more accurate detection depth, and faster positioning
15. 6 languages can be set (Simplified Chinese, Traditional Chinese, English, Japanese, Portuguese, Russian)
16. Setting functions (sensitivity, language, volume, length unit, shutdown time, factory reset)
17. Size: 138x68x22mm
18. Weight: 122g
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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.
- To process your return/exchange, please contact us at [email protected]
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4.8 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
High Quality
My husband is deficient in magnesium and these by far looked like they were of the highest quality . Not sure yet if they help him sleep better but will be purchasing them again.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Better sleep, better mood
This definitely helped my mood and sleeping. It literally changed my default. The only electrolyte that can pass the blood brain barrier. I recommend.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
For better sleep and consultation and calming effect.
It seems to work for me, it makes me calm but energetic, plus I sleep for 8 hours since taking it.
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Reviewed in the United States on May 10, 2026
★★★★★ 3
Not working for me 100%
Still not sure about how this magnesium affects me. I have only been taking one tablet an hour or two before bedtime. Seems like sometimes I can’t go to sleep after taking it, charges up my brain. Other times I sleep but have crazy dreams. Maybe it works for some, but not others. I’ll try to finish the bottle, but the lack of sleep after taking the Magnesium L-Threonate makes me hesitant to continue some nights. That’s mainly the reason I purchased this brand to include the reviews.
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Reviewed in the United States on February 12, 2026
★★★★★ 5
Helps Relax the muscles
I like to take a magnesium supplement daily, usually in the evening before going to be as it helps relax me for sleep
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Reviewed in the United States on May 3, 2026