★★★★★ 5
Works like it should.
Good motion sensor, light can be adjusted .
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Reviewed in the United States on June 29, 2025
Portable CO2 Concentration Detector Hand Held CO2 Detector With Temperature And Humidity / Alarm Air Quality Monitor
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Portable CO2 Concentration Detector Hand Held CO2 Detector With Temperature And Humidity / Alarm Air Quality MonitorShips FREE Handling Day: 1 3 Days, Arriving Day: 15 35 Days[SHORTDESCRIPTION] Instrument * 1 manual * 1 warranty card * 1 Features: Advanced carbon dioxide tester Air quality monitor A large screen displays CO2 concentration, temperature and humidity at the same time Use of non dispersive infrared sensor Manual calibration is recommended It will alarm when the carbon dioxide is too high Backlight function, convenient for normal use in dark areas Long
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Your Portable CO2 Concentration Detector Hand Held CO2 Detector With Temperature And Humidity / Alarm Air Quality Monitor orders ship within 1-2 business days.
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- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 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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4.5 ★★★★★
Based on 466 reviews
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Product Reviews
★★★★★ 1
Defective.
Defective. Won’t stay on. Built in timer option has permanently taken the place of always on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
★★★★★ 5
LO MAXIMO!!!!!
LO MAXIMO!!!!
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Reviewed in the United States on July 25, 2025
★★★★★ 4
Buena opción
Buena calidad, lindo peso. Versatilidad de opciones de color de luz. Duran bastante. Recarga fácil y rápida. Recomendables
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Reviewed in the United States on October 9, 2025
★★★★★ 2
Not great
Not pleased with these…at first very bright and seemed to hold charge well but as time has gone by they need to be charged ALOT! The glue doesn’t hold to the cabinet well. I wouldn’t buy them again based on them not holding charge long!
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Reviewed in the United States on May 5, 2025
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