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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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4.4 ★★★★★
Based on 310 reviews
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LYNN TURNER
Boise, US
★★★★★ 5
Kendra Scott Freshwater Pearl Necklace
Beautiful, expensive looking, great quality pearl necklace.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 8, 2025
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Verified Purchase
CSwanson
Cuba, US
★★★★★ 5
Classy, good quality & great price. Zero regrets!
Style: 2mm - 2.8g, Style: 2mm - 2.8g
These earrings came well-packaged and were beautiful out of the box. They have been my go-to pair on the daily since they arrived. I like that they’re sturdy, but not heavy, and aren’t fragile. I have no dings scratches, or anything like that on them. I was also really worried about the snap-to-close vs. an endless hoop, but it hasn’t been an issue. They are classic & look great with everything. Absolutely recommend!
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Reviewed in the United States on March 5, 2024
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Paulette Scotland
Port Orchard, US
★★★★★ 5
Size perfect
Style: 5mm - 8.3g
Beautiful
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Reviewed in the United States on June 7, 2026
A
Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 3
The Hoop needs tight grip
Style: 2mm - 2.8g, Style: 2mm - 2.8g
The hoop earring is nice but the hoop is too short and falling off easily. Need to be worn with care in order not to drop off unknowingly.
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Reviewed in the United States on June 10, 2025
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LouRymer
Pawtucket, US
★★★★★ 5
Perfect size and beautiful!
Style: 4mm - 2.2g
These are beautiful! Shiny and the perfect size. I love them!
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Reviewed in the United States on May 24, 2025

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