
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
For Your Every Summer RSVP, with Code: SUMMER15
Description
DUOYI Digital Ground Resistance Meter Tester, DY4100A, DY4100B1. Ground resistance Re (Rg when testing soil resistivity p) 2. Range: 2 ohms 20 ohms 200 ohms 2000 ohms 3. Test range: 0. 03~2. 000 ohms 0. 03~20. 00 ohms 0. 03~200. 0 ohms 0. 03~2000 ohms 4. Voltage to ground (AC voltage): 600V Test range 0~600Vac 5. Photovoltaic voltage (DC voltage): 1500V Test range: 0~1500Vac 6. Test method: voltage drop method (applicable to the current and voltage test of the probe) 7. Display: segment LCD display, display
1. Ground resistance Re (Rg when testing soil resistivity p)
2. Range: 2 ohms/20 ohms/200 ohms/2000 ohms
3. Test range: 0.03~2.000 ohms/0.03~20.00 ohms/0.03~200.0 ohms/0.03~2000 ohms
4. Voltage to ground (AC voltage): 600V Test range 0~600Vac
5. Photovoltaic voltage (DC voltage): 1500V Test range: 0~1500Vac
6. Test method: voltage drop method (applicable to the current and voltage test of the probe)
7. Display: segment LCD display, display backlight
8. Battery voltage warning: Battery logo display
9. Continuous test times: In the 2 ohm range, test once every 30 seconds with a 1 ohm load, and can be repeated more than 400 times
10. Input exceeds display: Display "OL"
11. Automatic shutdown function: If there is no operation for 5 minutes after the key operation, the system will enter the automatic shutdown state
12. Overload protection: AC280V/10 seconds between E-S ports
13. Withstand voltage: AC3540V (50/60Hz)/5 seconds between the electrical circuit and the outer box
14. Insulation resistance: 50 milliohms or more between the electrical circuit and the outer box/DC 1000V
15. Power supply: 6 AA batteries (not included)
16. When testing the ground resistance and soil resistivity, the series interference voltage will be automatically tested synchronously, and a prompt will be given if there is an abnormal test result
17. High-definition display, clear reading, easy measurement
18. Multiple gear selection, can be adjusted according to different needs
19. Applicable to measurement in power, post and telecommunications, railway, petroleum, chemical, communication, mining and other departments
20. Dimensions: 173x125x68mm
Packing list:
- DY4100A instrument x 1
- Cloth bag x 1
- Instruction manual x 1
- Certificate x 1
- Test line x 1 (red 15m/yellow 10m/green 5m)
- Multimeter pen x 1
- Ground rod x 2
Specification:
| Package Weight |
|
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
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 2293 reviews
Sort
Product Reviews
★★★★★ 5
I buy these again and again through the years!
Size: Medium, Color: Austin Brown Assorted (6-pairs)
Love these. After a year or two I wear holes in the bottoms because I wear them so much. Worth the little bit higher price because of the fit and comfort. Love how they are truly no show
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 18, 2025
★★★★★ 4
Good quality but tight on toes
Size: 6-10, Color: White/Assorted
These are great socks that stay in place, but they scrunch my toes together like crazy. My feet are normal width. When I first started wearing them I noticed my feet would ache after an hour or two.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 5
My New Favorite Socks
Size: 6-10, Color: Halo Gray/Assorted
These have quickly become mine and my mom's favorite socks. We wear them with tennis shoes, Hey Dudes, and more. The fabric is incredibly soft and comfortable, they do not budge/fall in my shoe, and are extremely well made. I have become so attached to these socks, that I no longer want any other brand.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 4, 2025
★★★★★ 5
Fit is great!
Size: 6-10, Color: Halo Gray/Assorted
These socks fit perfectly and never slip!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
★★★★★ 5
LOVE THEM!!
Size: Small, Color: (001) Black / Black / Castlerock
LOVE! These socks are so comfortable! I wear a 5 in women's and a 3 in big kid shoes. The small fit me perfectly. I see where some say they run small but I can't say that was an issue for me. They are "snug" but thats what you want with a no show sock. I feel they have support vs the ones i used to buy at Walmart. They are very soft! I am actually buying more today and throwing my other ones in the trash!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2026
recommand products
MS25-8-G21-F35-1320-00-MF Travel Motor for Road Roller RAHILE 125TT
7238429.50
A/C Compressor 1PK 12V SJ17273 for John Deere Tractor 5045E 5055E 5058E 5067E 5075M
131.00
Starter Motor 12V 11T 3.0kW QDJ1309-K QDJ1309K for Foton 404 Tractor
120.97
A/C Compressor 8PK 12V 102-1018 for Thermo King Tripac APU Carrier Transicold
147.47
Hydraulic Pump AM876753 AM876753-A for John Deere Tractor 770 790 870 970 990
154.00