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SCD30 Breakout ModuleSCD41SCD40K30S8GMP343
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ManufacturerAdafruitSensironSensironco2meter.comSensairVaisala
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DistributerAdafruitdigikey.com (OOS), mouser.comdigikey.com, mouser.comco2meter.comdigikey.comVaisala
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Price (USD)$58.95$37.1, $48.03$29.7, $37.25$85.00$55.00~$2800 USD (source)
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TechNDIRPhotoacousticPhotoacousticNDIRNDIRNDIR
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Measurement range (ppm)400-10,000400-5,000400-2,000
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Accuracy (± ppm, ± %)30,340,550,530,340,33,1
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Power Consumption - Avg (mA)1915154018
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Power Consumption - Pk (mA)
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Repeatability (± ppm)101010
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Response Time (s)206060
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InterfacesI2CI2CI2CI2C, UART (ModBus), Analog OutUART, PWM
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Other sensorsTemp + RHTemp + RHTemp + RH
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Calibration schemesASC, FRCASC, FRCASC, FRCASC, FRCASC, FRC
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Accuracy drift over lifetime (± ppm)50
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Lifetime (years)15
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Accuracy drift per year (± ppm, ± %)3.35,0.55,0.510
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NotesSCD41 Breakout
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SCD4x features low-power single-shot measurement
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Definitions:
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RHRelative humidity
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ASCAutomatic self-calibration(Different sensors may have different terminology in their datasheets, but these essentially mean the same thing)
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FRCForced re-calibration
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Notes:
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Power consumption is not really an apples to apples comparison because it will vary based on sampling rate
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