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it has been used on drinking machine
Work temperature: industry stage -35C to +35C
the battery and the load device you want to operate (Arduino
and GPIO for easy connectivity
calling and message
Sound Sensor (High Sensitivity) pulse oximeter it has been used onSound sensor module with analog and digital output. It works with supply voltage from 3. 3 V to 5. 3 V. It allows you to detect not only the volume of the sound but also the identification of characteristic sound source, therefore you can distinguish the source of the sound. Besides GND and 5V input, there is a pin named "A" which can output a analog value, and a pin named "D" which can output a digital value (0 or 1). The gain which can be set by the
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