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RS485 Output 0-2mg/L / 0-8mg/L / 0-20mg/L Residual Chlorine Sensor | Three-Electrode Structure, No Frequent Calibration Required

Marsoni M251S
Sale price$163.60
Pay 4 payments of $40.90 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
RS485 Output 0-2mg/L / 0-8mg/L / 0-20mg/L Residual Chlorine Sensor | Three-Electrode Structure, No Frequent Calibration RequiredWQS RC series Residual Chlorine sensor manual Product description This product is a device for measuring the concentration of residual chlorine (hypochlorous acid and hypochlorite ion concentrations) in water bodies. Adopting a three electrode system, it features high measurement accuracy, long service life, and no need for frequent calibration. It is suitable for automatic chemical dosing control in circulating water, chlorine dosing control in
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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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4.1 ★★★★★
Based on 852 reviews
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Gregory L. Brown
Cuba, US
★★★★★ 5
Cheap tie for cables and hoses
Size: 3/4 Inch X 90 ft, Number of Items: 1
I just cut to length, then use a hole punch or ID punch to make custom wraps for cords and hoses. Pull the wrap through the hole after it goes around one cable, then wrap the coiled cable. Much cheaper than buying ties from the local discount hardware store.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 23, 2024
E
Verified Purchase
Everything else It's OK, but needs a stronger magnet
Chelsea, US
★★★★★ 5
Keeps everything in one place
Color: Black Oval, Color: Black Oval
Good size, looks good and helps with organization
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 12, 2025
K
Verified Purchase
Kristen
Port Orchard, US
★★★★★ 4
Cute & works!
Color: Black Oval
A little smaller than anticipated. I wish the key hanger stick was a little bit taller, but it holds out keys and sunglasses right by the front door
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2026
H
Verified Purchase
Henry Rivas
Battle Creek, US
★★★★★ 5
Uhhh
Color: Black Round
Very nice easy assembly very sturdy and cool
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 19, 2025
J
Verified Purchase
Jan Ray
Louisville, US
★★★★★ 5
Find your keys much easier
Color: Black Square
We now know where are keys are all the time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026

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