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The HC-89 sensor
Easy to roll with excellent grip on the surface
with an embedded controller
MQ-4 Natural Gas sensor (303) Filaments To get the best VeroMQ 4 Natural Gas sensor The MQ 4 gas sensor is a device that is used to detect the presence of methane gas in the air. It is often used in applications such as natural gas leak detection, indoor air quality monitoring, and the oil and gas industry. The MQ 4 sensor is a type of metal oxide semiconductor (MOS) gas sensor. It works by measuring the conductivity of the air, which changes when the sensor is exposed to methane gas. The sensor has a high