<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><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<br /> Sensors can only recognize the presence or absence of sound (based on the principle of vibration), but cannot recognize it<br /> Don&#39;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<br /> 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:#3498db;">Circuit diagram</span></span> <p style="text-align:left;margin:0;"></p> <span style="color:#3498db;"><span style="font-size:18px;"></span></span><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<br /> The sound intensity of the surrounding environment.<br /> 2. When the ambient sound intensity does not reach the set threshold, the module outputs OUT<br /> High level, when the external environmental sound intensity exceeds the set threshold, the module<br /> OUT output low level;<br /> 3. The digital output OUT of the small board can be directly connected to the microcontroller through<br /> 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,<br /> This can form a voice controlled switch;<br /> <br /> </span></div></div>