DigiKey Datasheets for Gas Sensors

Gas sensors interact with a gas to initiate the measurement of its concentration. The sensor then provides output to an instrument to display the measurements.
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Product Name Notes
3-GAS (CO+NO2+NH3) AUTOMOTIVE AI
4 SERIES CHLORINE 50PPM
4 SERIES CO SENSOR - 1 000PPM
4 SERIES ELECTROCHEMICAL CHLORIN
4 SERIES ELECTROCHEMICAL ETHYLEN
4 SERIES ELECTROCHEMICAL FORMALD
4IN1 INTEGRATED TRANSMITTER
7 SERIES PPB CARBON MONOXIDE AIR
7 SERIES PPB HYDROGEN SULFIDE AI
7 SERIES PPB NITRIC OXIDE AIR QU
7 SERIES PPB NITROGEN DIOXIDE AI
7 SERIES PPB OZONE AIR QUALITY S
7 SERIES PPB SULPHUR DIOXIDE AIR
ACOHOL SENSOR MOLDULE(MQ3)
AIR POLLUTION TRANSMITTER, 10~10
Air Quality Sensor I²C
Air Quality Sensor Voltage
Ammonia (NH3) Sensor Current
Ammonia (NH3) Sensor Voltage
Ammonia (NH3) Sensor
AMMONIA GAS TRANSMITTER, RS485
AMMONIA NH3 SENSOR MODULE(MQ137)
AMMONIA NH3 SENSOR(MQ135)
Anaesthesia Sensor Voltage
Carbon Dioxide (CO2) Sensor 0 V ~ 10 V
Carbon Dioxide (CO2) Sensor 0 V ~ 4 V
Carbon Dioxide (CO2) Sensor 0 V ~ 5 V, 0 V ~ 10 V (Selectable)
Carbon Dioxide (CO2) Sensor 0 V ~ 5 V
Carbon Dioxide (CO2) Sensor 4 ~ 20mA
Carbon Dioxide (CO2) Sensor 4mA ~ 20mA
Carbon Dioxide (CO2) Sensor I²C, PWM
Carbon Dioxide (CO2) Sensor I²C
Carbon Dioxide (CO2) Sensor UART
Carbon Dioxide (CO2) Sensor Voltage
Carbon Dioxide (CO2), Humidity, Temperature Sensor 0 V ~ 5 V
Carbon Dioxide (CO2), Humidity, Temperature Sensor 0V ~ 5V, 0V ~ 10V, 4mA ~ 20mA
Carbon Dioxide (CO2), Humidity, Temperature Sensor 0V ~ 5V, 0V ~ 10V
Carbon Monoxide (CO) Sensor Current
Carbon Monoxide (CO) Sensor Voltage
Carbon Monoxide (CO), Hydrogen (H2) Sensor CAN
Chlorine (CI2) Sensor Current
CO SENSOR MODULE(MQ7B)
CO, CO2, HC Sensor Voltage
CO2 AIR QUALITY MONITOR, 4-20MA
CO2 AIR QUALITY MONITOR, RS485 O
CO2 SENSOR MODULE(MG811)
CO2 SENSOR TRANSMITTER, 350-1000
CO2 TRANSMITTER, 0-10V OUTPUT, 0
CO2 TRANSMITTER, RS485 OUTPUT, 0
CO2 TRANSMITTER
Dichlorodifluorometh ane (R-12) Sensor Voltage
DUCT TYPE CO2 GAS SENSOR
Ethylene Oxide (C2H4O) Sensor Current
Ethylene Sensor Voltage
FAST RESPONSE AUTOMOTIVE EMISSIO
FLAMMABLE GAS SENSOR (MQ9); CO A
Flammable Gas Sensor Voltage
FLAMMABLE GAS TRANSMITTER(MP135)
FLAMMABLE LNG LPG GAS TRANSMITTE
FLAMMABLE LPG GAS TRANSMITTER, 1
FREON R134A GAS SENSOR MODULE(MQ
GAS SENSOR MODULE(MQ5)
H2 SENSOR MODULE(MQ8), 50- 10000
H2S GAS TRANSMITTER, 4-20MA OUTP
H2S GAS TRANSMITTER, RS485 OUTPU
H2S SENSOR MODULE(MQ136), SENSIT
H2S SENSOR MODULE(MQ136)
Hydrocarbons Sensor Voltage
Hydrogen (H2) Sensor CAN
Hydrogen (H2) Sensor Voltage
Hydrogen (H2), Methane (CH4) Sensor Voltage
Hydrogen Sulfide (H2S) Sensor Current
Light Gases Sensor Voltage
LONG LIFE-TIME INDUSTRIAL OXYGEN
LOW PROFILE ELECTROCHEMICAL HYDR
LOW PROFILE ELECTROCHEMICAL OZON
MEMS GROWTH
Methane Sensor I²C
Methane Sensor Voltage
MINI SERIES ELECTRO-CHEMICAL CAR
MINI SERIESELECTRO-CHEMIC AL OXYG
MINI SIZE ELECTROCHEMICAL CARBON
Natural Gas (CH4) Sensor I²C
Natural Gas (CH4) Sensor Voltage
NH3 SENSOR MODULE(MQ137) WITH CO
NH3 SENSOR MODULE(MQ137), SENSIT
Nitric Oxide (NO) Sensor Current
Nitric Oxide (NO) Sensor I²C
Nitric Oxide (NO) Sensor Voltage
Nitrogen Dioxide (NO2) Sensor Current
Nitrogen Dioxide (NO2) Sensor Voltage
Oxygen Sensor Current
OZONE GAS TRANSMITTER(MQ131),O 3
OZONE SENSOR MODULE(MQ131), O3 1
OZONE SENSOR MODULE(MQ131),O3 10
OZONE TRANSMITTER WITH COVER, 10
R134A CFCS FREON LEAK TRANSMITTE
SENSOR AIR QUAL ANALOG/DGT OUT
SENSOR AIR QUALITY BLUETOOTH OUT
SENSOR AIR QUALITY CURRENT OUT
SENSOR AIR QUALITY I2C OUTPUT
SENSOR AIR QUALITY
SENSOR ALCOHOL BENZINE ANALOG
SENSOR BROMINE 5PPM
SENSOR CARB DIOXIDE 4MA-20MA OUT
SENSOR CARB MONOX ANALOG/DGT OUT
SENSOR CARB MONOX CURRENT OUT
SENSOR CARBON DIOXIDE 0-10V OUT
SENSOR CARBON DIOXIDE 0-5V OUT
SENSOR CARBON DIOXIDE I2C OUTPUT
SENSOR CARBON DIOXIDE
SENSOR ELECTROCHEM LOW PROFILE
SENSOR ELECTROCHEMICAL HYDROGEN
SENSOR FLUORINE 5PPM
SENSOR HYDROGEN CAN OUTPUT
SENSOR HYDROGEN DIGITAL
SENSOR HYDROGEN FLUORIDE
SENSOR HYDROGEN SULFIDE CUR OUT
SENSOR HYDROGEN/METHANE ANALOG
Sensor I²C
SENSOR NITROGEN DIOXIDE CUR OUT
SENSOR OXYGEN CURRENT OUTPUT
SENSOR PARTICLE MATTER PM2.5
SENSOR SULFUR DIOXIDE
Sensor Voltage
SENSOR
SMOKE SENSOR MOLDULE(MQ2)
SMOKE TRANSMITTER WITH COVER
SO2 GAS TRANSMITTER, 4-20MA OUTP
Sulfur Dioxide (SO2) Sensor Current
Sulfur Dioxide (SO2) Sensor Voltage
T3400 A2L REFRIGERANT SENSOR, R-
T3401 A2L REFRIGERANT SENSOR, R-
TCIRXTMA1
VOC AND ODOROUS GAS SENSOR MODUL
VOC SENSOR MODULE(MQ138)
ZIRCONIA OXYGEN TRANSMITTER 220M
ZIRCONIA OXYGEN TRANSMITTER 400M
ZIRCONIA OXYGEN TRANSMITTER 600M

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