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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 (HKD) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS
	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: HK$557.32 254In Stock 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	254In Stock	HK$557.32 HK$515.23 HK$499.61 HK$480.87 HK$467.96	Min.: 1 Mult.: 1 Max.: 100
	Multiple Function Sensor Development Tools SEK-SFA40 Evaluation Kit:Ready to use including SFA40 sensor on an EvalKit PCB, Qwiic to RJ45 interface cable to connect to the Sensor bridge, jumper wire set SEK-SFA40 Evalution Kit Sensirion 1: HK$659.74 48In Stock 50On Order New Product	Mfr. Part No. SEK-SFA40 Evalution Kit Mouser Part No 403-SEK-SFA40EVAL New Product	Sensirion	Multiple Function Sensor Development Tools SEK-SFA40 Evaluation Kit:Ready to use including SFA40 sensor on an EvalKit PCB, Qwiic to RJ45 interface cable to connect to the Sensor bridge, jumper wire set Learn More about Sensirion sek sfa40 eval kit	Datasheet	48In Stock 50On Order	HK$659.74	Min.: 1 Mult.: 1 Max.: 1
	Air Quality Sensors SEN68-SIN-T Air Quality Sensors. Particulate Matter, NOx, VOC, HCHO, Hum & Temp environmental sensor node. SEN68-SIN-T Sensirion 1: HK$551.15 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	HK$551.15 HK$465.01 HK$432.13 HK$392.26 View HK$370.80 HK$361.52 HK$361.43 Quote	Min.: 1 Mult.: 1
	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: HK$216.51 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 HK$216.51 HK$182.65 HK$169.74 HK$154.04 View Reel HK$126.34 HK$143.19 HK$134.89 HK$126.51 HK$126.34	Min.: 1 Mult.: 1 : 1,000
	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: HK$203.86 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 HK$203.86 HK$186.35 HK$179.77 HK$170.57 View Reel HK$142.21 HK$161.52 HK$148.37 HK$142.21	Min.: 1 Mult.: 1 Max.: 250 : 250