About us (Solu), Professional factory of circuit boards, welcome to our store for more choices with best price. What we pursue is your satisfication of our service, not just for our goods.For any reason you are unsatisfied with our product at any time, simply contact support for exchange or refund. we will reply you about any question you ask within 24 hours Specifications : These little units can sense sound and variations in sound and interface easily with microcontrollers. When the ambient sound levels are less than the threshold set by the potentiometer, the output of the unit is High, conversely when the ambient sound levels rise above the pre-set threshold, the modules output is Low. Adjustable Sensitivity Output in the form of digital switching outputs (0 and 1 high and low) Fixed bolt hole for easy installation Operating voltage : 3.3V-5V Board size: 3.2cm * 1.7cm Package Includes : *1X Sound Sensor Module
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