Check the listing for details. 2 Pcs Microphone Sound Sensor KY-038 Voice Sound Detection Sensor Module. Condition: New. Listed at 16.82 USD. What is this?Ultrasonic module, This high-sensitivity microphone sensor module is suitable for voice recognition systems and can capture and transmit sound signals. It can be used for voice-controlled switch applications such as voice-controlled lights and voice-controlled electronic devices. In addition, in environmental monitoring, it can be used to detect noise levels or sound frequencies.What will I get?The Microphone Sound Sensor, we provide here, is in size of:Working Voltage: DC 3-24 VOutput Form: Digital and Analog OutputModel: KY-038Number of Pins:4In the package of: 2 x Voice Sound Detection SensorAre there any advantages of the product?High sensitivity: The sound sensor module has high sensitivity and can accurately capture sound signals in the environment.