Gas Sensors

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Otronic CO2 Sensor MH-Z19B with cable
The ideal sensor for measuring air quality (CO2 / nitrogen). Can be used with an Arduino, ESP8266 or ESP32 in, for example, an air or ventilation syst...
Otronic Gas sensor and smoke sensor MQ-2 module
This analog gas sensor has a small heating element with an electronic-chemical sensor. It is suitable for use in buildings and can only be used after ...
Otronic Gas sensor MQ-5 module
Sensor for measuring the concentration of benzenes, alcohol and smoke in the air, for example to detect gas leaks (gas alarm) or to monitor air qualit...
Otronic Alcohol and ethanol sensor MQ-3
This analog gas sensor has a small heating element with an electronic-chemical sensor. It is suitable for use in buildings and can only be used after ...
Otronic MQ-135 Gas sensor module Ammonia Sulfur Gasoline
This module contains a sensor to detect the concentrations of various harmful gases in the air. The MQ-135 can detect gas concentrations from 300 to...
Otronic Carbon Monoxide Sensor MQ-7
Heater Voltage: 5&plusmn;0.2VAC or DC Current: 140mA <span style=font...
Otronic Laser Fine Dust Sensor SDS011 with USB module
The SDS011 fine dust sensor uses the principle of laser scattering to detect particles between 0.3 and 10 &micro;m in the air. Thanks to the dig...
Otronic MQ-4 Gas Sensor Module
This sensor detects the presence of methane and natural gas. Connections: 5V (5V voltage) GND (earth/min/ground) A0 (An...
Otronic MQ-9 Gas sensor module
From the MQ sensor family this is the MQ-9 and this sensor detects the presence of carbon monoxide, methane and LPG. 5V (5V voltage)G...
Otronic Gas sensor MQ-6 module LPG Propane Butane
Features - Arduino compatible- High sensitivity (adjustable via potentiometer)- Threshold value setting possible...
Otronic MQ-8 Gas sensor module Hydrogen gas
This sensor detects the presence of hydrogen gas. Connections: 5V (5V voltage) GND (ground) A0 (A...