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Has a frequency measurement
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A Hall Effect sensor is much smaller
Fermion MEMS Formaldehyde HCHO Gas Detection Sensor Push Buttons Has a frequency measurementFermion MEMS Formaldehyde HCHO Gas Detection Sensor (Breakout, 0 3ppm) With great pleasure, we're presenting to you the Fermion MEMS Formaldehyde HCHO Gas Detection Sensor. This HCHO sensor is a fantastic choice if you need an accurate way to measure formaldehyde levels. This formaldehyde gas detector uses advanced MEMS technology, making it small and easy to fit into different devices. Measuring just 13x13x2. 5mm, it uses very little powerless than