RS485 Modbus Temperature Humidity Pressure Light TVOC PM2.5 PM10 CO2 HCHO O3 O2 H2S CH4 CO NO2 SO2 H2 NH3 Air Quality Sensor

RS485 Modbus Temperature Humidity Pressure Light TVOC PM2.5 PM10 CO2 HCHO O3 O2 H2S CH4 CO NO2 SO2 H2 NH3 Air Quality Sensor

Marsoni

M251S

$41.00

Get it in 3 business days with 1 day shipping. Friday, May 29

RS485 Modbus Temperature Humidity Pressure Light TVOC PM2.5 PM10 CO2 HCHO O3 O2 H2S CH4 CO NO2 SO2 H2 NH3 Air Quality SensorTTE SAQ Series Air Quality Sensor Manual Measuring parameters Parameters Range Resolution Precision Preheat time PM2. 5 0~1000ug m3 1ug m3 10% 2min PM10 0~1000ug m3 Temperature 40~+120 0. 1 0. 5(25 Humidity 0%RH 100%RH 0. 1%RH 3%RH60%RH,25 Air pressure 0~120Kpa 0. 1Kpa 0. 15Kpa@2575Kpa Light 0~200000 Lux 1Lux 7%(25) TVOC 0~60000ppb 1ppb 8%FS125ppb CO2 0~5000ppm 1ppm (40ppm+ 3%FS) 2min 10min(max precision) HCHO 0~5ppm 0. 01ppm 5%FS 5 min O3 0~10ppm 0.

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Product was as described. Works well. I use it for measuring the amount of coffee for my drip coffee maker. I have not done any testing with respect to actual accuracy so cannot comment. But it seems close to the other scale that I have that only measures to the nearest gram. Construction seems good. Nice looking unit.

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Reviewed in the United States on May 12, 2026

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Mark Campbell

Lowell, US

★★★★★ 4

Nice scale

Color: Black

Works as expected, nice size. Makes a big difference when adjusting espresso extraction. I haven't used the timer. One improvement for my use would be to move the power switch from the back to the front, on the side or on the control panel.

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Reviewed in the United States on May 5, 2026

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Jerry McCamman

Grantham, US

★★★★★ 5

accurate scale

Color: Black

great product

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Reviewed in the United States on June 1, 2026

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Peter Merritt

Charlottesville, US

★★★★★ 5

Best Mid Priced Scale on the Market!

Color: Black, Color: Black

Hand down the best prices scale for the price. Excellent ability to precisely dial in pour overs. I’ve been waiting a long time for a scale like this to hit this price point.

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Reviewed in the United States on May 16, 2026

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amazon user

New York, US

★★★★★ 5

Good

Color: Black

This food scale is accurate, easy to use, and very helpful for cooking and baking.

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Reviewed in the United States on May 13, 2026