Gas

LJ12A3-4-Z/BX Inductive Proximity Sensor Switch DC 6V-36V

MQ-5 Methane Gas Sensor Shield methane detector module (Blue)

MQ7 Gas sensor only

MQ-3 Alcohol Gas Detector Alcohol Ethanol Sensor Module (Blue)

MQ4 Gas sensor only

MQ8 Hydrogen Gas Sensor Module for Arduino Gas Sensor module(Black)

MQ4 Methane Gas Sensor Natural Coal Detector Module SnO2

MQ6 Gas sensor only

MQ6 Gas sensor module

MQ-2 Gas Smoke sensor module

MQ3 Gas sensor only

MQ-7 Semiconductor Sensor CO Gas Sensor Module ( Black)