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Description
90V 20A Color Dual-Display Voltage Current Meter Charge Discharge Measurement Counter, Without RelayFeatures 1. Bidirectional current detection, users who detect charging and discharging can easily detect bidirectional current without changing the wiring direction. 2. Power off memory function, after power off, it can memorize the AH number before power off, which is convenient for observation and measurement. 3. The time and AH number reset function will not affect the next measurement. 4. The number of AH can be topped up without affecting the
Features1. Bidirectional current detection, users who detect charging and discharging can easily detect bidirectional current without changing the wiring direction.
2. Power-off memory function, after power-off, it can memorize the AH number before power-off, which is convenient for observation and measurement. 3. The time and AH number reset function will not affect the next measurement.
4. The number of AH can be topped up without affecting the direct discharge measurement.
5. The voltage, current, charging capacity AH number, WH number, time and power are displayed at the same time, and the display information is comprehensive and clear.
6. With an output shutdown function key, the output can be turned on or off flexibly.
7. With overvoltage, overcurrent, overpower, time limit, overcharge and other protection functions. 8. It can be calibrated online, which is convenient for customers to correct errors in time.
9. When necessary, the liquid crystal display can be turned off to reduce the power consumption of the product.
Specifications
1. Voltage measurement range:
- Measurement range when self-powered: 10V~90V
- Measurement range when externally powered: 0~90V
- Input current/output current measurement range: 0~20A
2. Display mode Color LCD display
3. Display Resolution
- Voltage: 0.01V
- Current: 0.01A
- Capacity: 0.01AH
- Time: 0.01H
4. Accuracy
- Voltage: +/-1%+2 words
- Current: +/-2%+5 characters
5. Measurement rate: 5 times/second
6. Protection type and setting range:
- OVP (Over Voltage Protection): 0.01V~90V
- OPP (Over Power Protection): 0.01W~9.99KW
- LVP (under voltage protection): 0.01V~90V
- OCP (Over Current Protection): 0.1~100A
- OAH (Overcharged Power Protection): 0.01AH~999AH
- OFT (timeout protection) : 0.01 hours~99.9 hours
7. Dimensions (L x W x H): 79 x 43 x 52(mm)
8. Mounting hole opening (mm): 76.5 x 39.2 (mm)
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
- 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
4.1 ★★★★★
Based on 1420 reviews
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Product Reviews
★★★★★ 5
Fantastic!
Color: Gray
Excellent product… it’s the fix for dry cracked heels
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 5
I’d buy again
Color: Gray
It does a great job!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
These are work beautifully.
Color: Gray
These work wonderfully. Use very light moisturizer.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 5
Transformative for Dry, Cracked Heels!
Color: Original Grey
I recently purchased Dr. Frederick's Original Moisturizing Heel Socks, and they have truly transformed the condition of my feet! I can’t recommend them highly enough.
Effective Moisturization: These socks are infused with moisturizing agents that work wonders. After just a few uses, I noticed a significant reduction in dryness and cracking on my heels. My feet feel softer and smoother, and I love that I can wake up to beautifully moisturized skin.
Comfortable Fit: The socks are incredibly comfortable to wear, with a snug yet gentle fit. I appreciate that they don’t feel restrictive, allowing me to walk around my home while wearing them without any discomfort. They are also lightweight, making them easy to slip on before bed.
User-Friendly: They are super easy to use—just wear them overnight, and let the socks do their magic. I love the simplicity of incorporating them into my nighttime routine.
Durable Quality: The quality of the socks is impressive. They wash well and have maintained their shape and effectiveness after multiple uses. I feel confident that they will last a long time.
Final Thoughts: If you're struggling with dry, cracked heels, I highly recommend Dr. Frederick's Original Moisturizing Heel Socks. They are a fantastic investment in foot care and have made a noticeable difference in the health of my skin. These socks have become a must-have in my self-care routine!
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Reviewed in the United States on October 4, 2024
★★★★★ 5
These worked for me!
Color: Original Grey
They worked great. I bought these for cracked sore heels. It took 2-3 weeks but my heels no longer hurt and the cracks have closed and look more like an indention than a crack now. They feel so much better, but I'll probably wear them another week just to be sure they stay healed. They look and feel like regular socks from the outside but only cover the heel with the toe open. Not think but not thick, again like regular socks. They would probably be slippery on a smooth surface the same as socks. The inside feels like rubber or something smooth at the heel. I have washed them once each pair and accidentally dried one pair in the dryer. They still seem to feel the same so I think they're fine. They're pretty inexpensive and had different colors and sizes.
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Reviewed in the United States on February 10, 2026