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Alcohol Gas Sensor - MQ-3

Code: SKU-000267

This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer.

$ 14.95

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+67 more from our supplier in 7-10 days

Ammonia Gas Sensor - MQ-137

Code: SKU-006708

The MQ-137 is an Ammonia (NH₃) petrol sensor from Winsen. The sensing element is SnO2, which has lower conductivity in clean air.

$ 106.95

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+48 more from our supplier in 7-10 days

Carbon Monoxide Sensor - MQ-7

Code: SKU-000407

This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air.

$ 13.95

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+53 more from our supplier in 7-10 days

Dual Gas CO and CH4 Detection Sensor - MQ-9B

Code: SKU-006705

The MQ-9B is a CO and CH₄ petrol detection sensor from Winsen. The sensing material of the MQ-9B is SnO2, which has a low conductivity in clean air.

$ 10.95

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+199 more from our supplier in 7-10 days

Hydrogen Gas Sensor - MQ-8

Code: SKU-000826

This is a simple-to-use hydrogen petrol sensor, suitable for sensing hydrogen concentrations in the air.

$ 12.95

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+92 more from our supplier in 7-10 days

Hydrogen Sulfide Gas Sensor - MQ-136

Code: SKU-006707

The MQ-136 is a Hydrogen Sulfide detection sensor with a sensing range of 1 - 200ppm. The sensing element is SnO2, which has lower conductivity in clean air

$ 72.95

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+97 more from our supplier in 7-10 days

LPG Gas Sensor - MQ-6

Code: SKU-000409

This is a simple-to-use liquefied petroleum petrol (LPG) sensor, suitable for sensing LPG (composed of mostly propane and butane) concentrations in the air.

$ 11.95

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+210 more from our supplier in 7-10 days

Methane CNG Gas Sensor - MQ-4

Code: SKU-000408

This is a simple-to-use compressed natural petrol (CNG) sensor, suitable for sensing natural petrol (composed of mostly Methane [CH4]) concentrations in the air.

$ 11.95

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+51 more from our supplier in 7-10 days

SparkFun CO2 Sensor - STCC4/SHT40 (Qwiic)

Code: SKU-011476

Accurately measure indoor CO2 concentrations, with supported temperature and humidity readings, with this Qwiic-enabled breakout featuring the Sensirion STCC4 and SHT40 sensors.

$ 58.95

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+78 more from our supplier in 7-10 days

SparkFun Formaldehyde Sensor - SFA40 (Qwiic)

Code: SKU-011473

Accurately measure indoor formaldehyde (CH2O/HCHO) levels with this low-power, Qwiic-enabled SFA40 sensor from Sensirion.

$ 94.95

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+58 more from our supplier in 7-10 days