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CJMCU-1100 gas sensor module is built with MS1100 high-performance sensing chip, specially designed to detect VOC, formaldehyde and benzene gas concentration. With stable 100mA operating current, it delivers sensitive and reliable air quality induction performance. The breakout board features compact size and standard pin layout, easy to connect with mainstream development boards for secondary development. Perfectly applied in indoor air monitoring, smart home devices, environmental detection and DIY gas alarm projects.