<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><div><span style="font-size:20px"><strong>Characteristic:</strong></span><br/><br/><span style="font-size:18px">1. Can detect the sound intensity of the surrounding environment, please note: this transmission Sensors can only recognize the presence or absence of sound (based on the principle of vibration), but cannot recognize it Don&#x27;t make sounds of different sizes or specific frequencies<br/>2. Sensitivity adjustable (blue digital potentiometer adjustment in the figure)<br/>3. Working voltage 3.3V-5V<br/>4. Output format: digital switch output (0 and 1 high and low levels)<br/>5. Equipped with fixed bolt holes for easy installation</span><br/><strong><span style="font-size:20px">Wiring instructions:</span></strong><br/><br/><span style="font-size:18px">1. VCC external 3.3V-5V voltage (can be directly connected to 5V microcontroller and 3.3V microcontroller connected)<br/>2. GND external GND<br/>3. 0UT small board switch output interface (0 and 1)</span><br/><br/><span style="font-size:20px"><span style="color:rgb(52, 152, 219)">Circuit diagram</span></span></div><p style="text-align:left;margin:0px;margin-bottom:0px;margin-top:0px;margin-left:0px;margin-right:0px" align="left"></p><div><br/><br/><strong><span style="font-size:20px">Instructions:</span></strong><br/><span style="font-size:18px">1. The sound module is very sensitive to the intensity of environmental sound and is generally used to detect it The sound intensity of the surrounding environment.<br/>2. When the ambient sound intensity does not reach the set threshold, the module outputs OUT High level, when the external environmental sound intensity exceeds the set threshold, the module OUT output low level;<br/>3. The digital output OUT of the small board can be directly connected to the microcontroller through A microcontroller is used to detect high and low voltage levels, thereby detecting environmental sounds;<br/>4. The digital output OUT of the small board can directly drive the relay module in our store, This can form a voice controlled switch;<br/><br/></span></div></div></div><br/>