Air Quality Sensors 4 Series SO2 Gas Sensor - 20ppm
SGX-4SO2
Amphenol SGX Sensortech
1:
$132.47
32 In Stock
Mouser Part #
523-SGX-4SO2
Amphenol SGX Sensortech
Air Quality Sensors 4 Series SO2 Gas Sensor - 20ppm
32 In Stock
1
$132.47
5
$123.94
10
$116.12
25
$116.04
50
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50
$113.03
100
$109.07
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Electrochemical 4-series
Sulfur Dioxide
0 PPM
20 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Ozone Sensor 20ppm
SGX-4O3-20
Amphenol SGX Sensortech
1:
$158.77
22 In Stock
Mouser Part #
523-SGX-4O3-20
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Electrochemical Ozone Sensor 20ppm
22 In Stock
1
$158.77
5
$130.77
10
$117.63
20
$112.08
60
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60
$107.71
100
$103.75
260
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Gas Sensor
Ozone (O3)
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series CO Sensor - 1,000ppm
SGX-4CO-LC
Amphenol SGX Sensortech
1:
$83.68
9 In Stock
Mouser Part #
523-SGX-4CO-LC
Amphenol SGX Sensortech
Air Quality Sensors 4 Series CO Sensor - 1,000ppm
9 In Stock
1
$83.68
5
$80.35
10
$42.64
100
$39.20
250
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250
$38.95
500
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Electrochemical 4-series
Carbon Monoxide
0 PPM
1000 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series High Conc CO Sensor - 10000ppm
SGX-4CO-10K
Amphenol SGX Sensortech
1:
$132.55
6 In Stock
Mouser Part #
523-SGX-4CO-10K
Amphenol SGX Sensortech
Air Quality Sensors 4 Series High Conc CO Sensor - 10000ppm
6 In Stock
1
$132.55
5
$132.11
10
$84.41
250
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250
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Electrochemical 4-series
Carbon Monoxide
0 PPM
10000 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series Ammonia Sensor - 300ppm
SGX-4NH3-300
Amphenol SGX Sensortech
1:
$196.52
1 In Stock
Mouser Part #
523-SGX-4NH3-300
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Ammonia Sensor - 300ppm
1 In Stock
1
$196.52
5
$167.21
10
$124.85
100
$120.01
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Mult.: 1
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Electrochemical 4-series
Ammonia
0 PPM
300 PPM
Analog
- 40 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series NO2 Sensor 2 Electrode - 20ppm
360°
+3 images
SGX-4NO2-2E
Amphenol SGX Sensortech
1:
$97.32
6 In Stock
Mouser Part #
523-SGX-4NO2-2E
Amphenol SGX Sensortech
Air Quality Sensors 4 Series NO2 Sensor 2 Electrode - 20ppm
6 In Stock
1
$97.32
5
$95.10
10
$62.14
100
$60.52
250
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250
$60.08
500
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Electrochemical 4-series
Nitrogen Dioxide
0 PPM
20 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors MEMS Pellistor Gas Sensor, 0-5% volume Flammable Gases, Hazardous Area safe (ATEX certified), Flameproof enclosure Sensing(EX-da certified), with pins
MP7227-R
Amphenol SGX Sensortech
1:
$62.27
19 In Stock
Mouser Part #
523-MP7227-R
Amphenol SGX Sensortech
Air Quality Sensors MEMS Pellistor Gas Sensor, 0-5% volume Flammable Gases, Hazardous Area safe (ATEX certified), Flameproof enclosure Sensing(EX-da certified), with pins
19 In Stock
1
$62.27
5
$58.68
10
$57.80
20
$52.96
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MEMS Pellistor
Flammable
0 %
5 %
Analog
1.6 V
3.2 V
- 20 C
+ 60 C
MPEL
Air Quality Sensors 4 Series Nitrogen Dioxide Sensor-30ppm
360°
+3 images
SGX-4NO2
Amphenol SGX Sensortech
1:
$67.82
29 In Stock
Mouser Part #
523-SGX-4NO2
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Nitrogen Dioxide Sensor-30ppm
29 In Stock
1
$67.82
5
$62.47
10
$60.47
20
$57.67
50
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50
$53.24
100
$51.94
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Electrochemical 4-series
Nitrogen Dioxide
0 PPM
30 PPM
Analog
1.3 V
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series ETO Gas Sensor 20ppm
SGX-4ETO
Amphenol SGX Sensortech
1:
$158.70
14 In Stock
Mouser Part #
523-SGX-4ETO
Amphenol SGX Sensortech
Air Quality Sensors 4 Series ETO Gas Sensor 20ppm
14 In Stock
1
$158.70
5
$146.62
10
$123.57
50
$116.87
100
$116.05
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Electrochemical 4-series
Ethylene Oxide
0 PPM
20 PPM
Analog
- 20 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Bromine 5ppm
SGX-BR2-5
Amphenol SGX Sensortech
1:
$378.19
23 In Stock
Mouser Part #
523-SGX-BR2-5
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Electrochemical Bromine 5ppm
23 In Stock
1
$378.19
5
$354.27
10
$345.92
20
$345.89
100
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100
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Gas Sensor
Multi-Gas
- 20 C
+ 40 C
Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Fluorine 5ppm
SGX-F2-5
Amphenol SGX Sensortech
1:
$378.40
9 In Stock
Mouser Part #
523-SGX-F2-5
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Electrochemical Fluorine 5ppm
9 In Stock
1
$378.40
5
$354.86
10
$347.82
20
$254.45
100
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100
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Electrochemical 4-series
Fluorine
0 PPM
5 PPM
Analog
- 20 C
+ 40 C
Electro-Chemical
Air Quality Sensors 4 Series Ammonia Sensor - 100ppm
SGX-4NH3-100
Amphenol SGX Sensortech
1:
$108.85
51 In Stock
Mouser Part #
523-SGX-4NH3-100
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Ammonia Sensor - 100ppm
51 In Stock
1
$108.85
5
$100.76
10
$97.75
100
$90.23
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Min.: 1
Mult.: 1
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Electrochemical 4-series
Ammonia
0 PPM
100 PPM
Analog
- 40 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series Ammonia Sensor - 1000ppm
SGX-4NH3-1000
Amphenol SGX Sensortech
1:
$140.86
40 In Stock
Mouser Part #
523-SGX-4NH3-1000
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Ammonia Sensor - 1000ppm
40 In Stock
1
$140.86
5
$130.75
10
$126.98
50
$120.01
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Electrochemical 4-series
Ammonia
0 PPM
1000 PPM
Analog
- 40 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 ser O2 sens 0-25% 3 year life
SGX-4OX-EL
Amphenol SGX Sensortech
1:
$86.79
44 In Stock
Mouser Part #
523-SGX-4OX-EL
Amphenol SGX Sensortech
Air Quality Sensors 4 ser O2 sens 0-25% 3 year life
44 In Stock
1
$86.79
5
$80.18
10
$77.70
25
$74.74
50
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50
$72.71
100
$69.03
500
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Electrochemical 4-series
Oxygen
0 %
25 %
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series CL2 Gas Sensor - 10ppm
SGX-4CL2
Amphenol SGX Sensortech
1:
$183.34
5 In Stock
Mouser Part #
523-SGX-4CL2
Amphenol SGX Sensortech
Air Quality Sensors 4 Series CL2 Gas Sensor - 10ppm
5 In Stock
1
$183.34
5
$165.76
10
$124.85
100
$120.01
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Electrochemical 4-series
Chlorine
0 PPM
10 PPM
Analog
- 20 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series CO Sensor 1,000ppm
SGX-4CO
Amphenol SGX Sensortech
1:
$54.52
7 In Stock
Mouser Part #
523-SGX-4CO
Amphenol SGX Sensortech
Air Quality Sensors 4 Series CO Sensor 1,000ppm
7 In Stock
1
$54.52
5
$50.10
10
$50.08
20
$45.53
50
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50
$44.78
100
$43.88
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Mult.: 1
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Electrochemical 4-series
Carbon Monoxide
0 PPM
2000 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series Dual-Tox Sensor-500ppm/200ppm
SGX-4DT
Amphenol SGX Sensortech
1:
$120.56
1 In Stock
Mouser Part #
523-SGX-4DT
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Dual-Tox Sensor-500ppm/200ppm
1 In Stock
1
$120.56
5
$100.35
10
$73.08
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Min.: 1
Mult.: 1
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Electrochemical 4-series
Carbon Monoxide + Hydrogen Sulfide
0 PPM
500 PPM, 200 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series H2S Sensor - 100ppm
SGX-4H2S-100
Amphenol SGX Sensortech
1:
$55.83
22 In Stock
Mouser Part #
523-SGX-4H2S-100
Amphenol SGX Sensortech
Air Quality Sensors 4 Series H2S Sensor - 100ppm
22 In Stock
1
$55.83
5
$51.31
10
$49.62
25
$47.61
250
$47.03
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Min.: 1
Mult.: 1
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Electrochemical 4-series
Hydrogen Sulfide
0 PPM
100 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Hydrogen Sulfide sensor 300ppm
SGX-4H2S-300
Amphenol SGX Sensortech
1:
$67.94
2 In Stock
Mouser Part #
523-SGX-4H2S-300
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Electrochemical Hydrogen Sulfide sensor 300ppm
2 In Stock
1
$67.94
5
$62.57
10
$60.58
25
$58.18
50
View
50
$56.55
100
$49.54
250
$49.31
500
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Mult.: 1
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Electro-Chemical
H2S
0 PPM
300 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series NO Gas Sensor - 250ppm
SGX-4NO-250
Amphenol SGX Sensortech
1:
$136.24
9 In Stock
Mouser Part #
523-SGX-4NO-250
Amphenol SGX Sensortech
Air Quality Sensors 4 Series NO Gas Sensor - 250ppm
9 In Stock
1
$136.24
5
$126.40
25
$120.01
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Min.: 1
Mult.: 1
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Electrochemical 4-series
Nitric Oxide
0 PPM
250 PPM
Analog
- 30 C
+ 50 C
Electro-Chemical
Air Quality Sensors 4 Series Lead free O2 Sensor,>5years
SGX-4OX-ROHS
Amphenol SGX Sensortech
1:
$80.86
2 In Stock
Mouser Part #
523-SGX-4OX-ROHS
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Lead free O2 Sensor,>5years
2 In Stock
1
$80.86
5
$75.07
10
$73.20
50
$68.46
100
$67.12
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Min.: 1
Mult.: 1
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Electrochemical 4-series
Oxygen
0 %
25 %
Analog
- 40 C
+ 60 C
Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Hydrogen Fluoride 10ppm
SGX-HF-10
Amphenol SGX Sensortech
1:
$284.14
6 In Stock
Mouser Part #
523-SGX-HF-10
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Electrochemical Hydrogen Fluoride 10ppm
6 In Stock
1
$284.14
5
$254.53
10
$243.36
20
$209.25
60
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60
$206.40
100
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Electrochemical 4-series
Hydrogen Fluoride
0 PPM
10 PPM
Analog
- 20 C
+ 55 C
Electro-Chemical
Air Quality Sensors 4 Series Electrochemical Hydrogen Chloride 30ppm
SGX-HCL-30
Amphenol SGX Sensortech
1:
$387.42
2 In Stock
Mouser Part #
523-SGX-HCL-30
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Electrochemical Hydrogen Chloride 30ppm
2 In Stock
1
$387.42
5
$361.67
20
$361.66
60
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60
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Gas Sensor
Multi-Gas
- 20 C
+ 40 C
Electro-Chemical
Air Quality Sensors 4 Series Oxygen Sensor 25% 2 yr life
360°
+3 images
SGX-4OX
Amphenol SGX Sensortech
1:
$51.25
200 On Order
Mouser Part #
523-SGX-4OX
Amphenol SGX Sensortech
Air Quality Sensors 4 Series Oxygen Sensor 25% 2 yr life
200 On Order
View Dates
On Order:
60 Expected 2026-08-27
140 Expected 2026-09-18
Factory Lead-Time:
10 Weeks
1
$51.25
5
$47.06
20
$42.75
50
$42.05
100
View
100
$41.18
500
Quote
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Min.: 1
Mult.: 1
No
Electrochemical 4-series
Oxygen
0 %
25 %
Analog
- 30 C
+ 50 C
Electro-Chemical