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Formaldehyde Sensors & Sensor Modules

Sensirion Formaldehyde Sensors and Sensor Modules deliver accurate, selective HCHO measurement for indoor air quality systems. Formaldehyde sensing distinguishes the harmful gas from other commonly present volatile organic compounds, supporting reliable monitoring in air purifiers, air conditioners, ventilation systems, and standalone air quality instruments. The portfolio incorporates dedicated low-power sensing and multi-parameter environmental modules to meet varied integration requirements.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Type	Sensor Type	Measuring Range - Min	Measuring Range - Max	Accuracy	Output Type	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Mounting Style	Series
	Air Quality Sensors SEN68-SIN-T Air Quality Sensors. Particulate Matter, NOx, VOC, HCHO, Hum & Temp environmental sensor node. SEN68-SIN-T Sensirion 1: CHF 53.97 169In Stock 208On Order New Product	Mfr. Part No. SEN68-SIN-T Mouser Part No 403-SEN68-SIN-T New Product	Sensirion	Air Quality Sensors SEN68-SIN-T Air Quality Sensors. Particulate Matter, NOx, VOC, HCHO, Hum & Temp environmental sensor node. Learn More about Sensirion sen68 sensors	Datasheet	169In Stock 208On Order	CHF 53.97 CHF 45.54 CHF 42.32 CHF 38.41 View CHF 36.31 CHF 35.40 CHF 35.39 Quote	Min.: 1 Mult.: 1			Air quality Sensor	Formaldehyde	0 PPB	2000 PPB	20 PPB		3.15 V	3.6 V	+ 10 C	+ 40 C		Sen6x
	Air Quality Sensors SEN69C-SIN-T Air Quality Sensors. Particulate Matter, HCHO, VOC, NOx CO2, Hum & Temp environmental sensor node. SEN69C-SIN-T Sensirion 1: CHF 54.58 251In Stock 420Expected 2/16/2027 New Product	Mfr. Part No. SEN69C-SIN-T Mouser Part No 403-SEN69C-SIN-T New Product	Sensirion	Air Quality Sensors SEN69C-SIN-T Air Quality Sensors. Particulate Matter, HCHO, VOC, NOx CO2, Hum & Temp environmental sensor node. Learn More about Sensirion sen69c sensors	Datasheet	251In Stock 420Expected 2/16/2027	CHF 54.58 CHF 50.45 CHF 48.92 CHF 47.09 CHF 45.83	Min.: 1 Mult.: 1 Max.: 100			Air quality Sensor	Formaldehyde	0 PPB	2000 PPB	20 PPB		3.15 V	3.6 V	+ 10 C	+ 40 C		Sen6x
	Air Quality Sensors SFA40 Formaldehyde Sensor for 1 - 2000 ppb formaldehyde concentration measurements with I2C interface and 6 years service life; features onboard Sensirion RHT sensor SFA40-D-R3 Sensirion 1: CHF 21.20 683In Stock New Product	Mfr. Part No. SFA40-D-R3 Mouser Part No 403-SFA40-D-R3 New Product	Sensirion	Air Quality Sensors SFA40 Formaldehyde Sensor for 1 - 2000 ppb formaldehyde concentration measurements with I2C interface and 6 years service life; features onboard Sensirion RHT sensor Learn More about Sensirion sfa40 sensors	Datasheet	683In Stock	Cut Tape CHF 21.20 CHF 17.89 CHF 16.62 CHF 15.09 View Reel CHF 12.37 CHF 14.02 CHF 13.21 CHF 12.39 CHF 12.37	Min.: 1 Mult.: 1 : 1’000			Miniature Electrochemical Formaldehyde Sensor	Formaldehyde (HCHO)	0 PPB	2000 PPB	20 %	Digital	1.62 V	3.6 V	0 C	+ 50 C	SMD/SMT	SFA40
	Air Quality Sensors SFA40 Formaldehyde Sensor for 1 - 2000 ppb formaldehyde concentration measurements with I2C interface and 6 years service life; features onboard Sensirion RHT sensor SFA40-D-R1 Sensirion 1: CHF 19.96 157In Stock New Product	Mfr. Part No. SFA40-D-R1 Mouser Part No 403-SFA40-D-R1 New Product	Sensirion	Air Quality Sensors SFA40 Formaldehyde Sensor for 1 - 2000 ppb formaldehyde concentration measurements with I2C interface and 6 years service life; features onboard Sensirion RHT sensor Learn More about Sensirion sfa40 sensors	Datasheet	157In Stock	Cut Tape CHF 19.96 CHF 18.25 CHF 17.61 CHF 16.71 View Reel CHF 13.93 CHF 15.82 CHF 14.53 CHF 13.93	Min.: 1 Mult.: 1 Max.: 250 : 250			Miniature Electrochemical Formaldehyde Sensor	Formaldehyde (HCHO)	0 PPB	2000 PPB	20 %	Digital	1.62 V	3.6 V	0 C	+ 50 C	SMD/SMT	SFA40