Specification AudioSensitivity : 47 decibels Brand : Reland Sun BulletPoint1 : KY-038 High Sensitivity Sound Detection Microphone Small Module for it can detect sound and outputs, both as analog signal as well as digital, for example, when creating a clap on/clap off light switch. This sensor is very useful with the relay module. BulletPoint2 : KY-038 High Sensitivity Sound Detection Microphone Small Module for it has two LED Indicatiors: POWER and SENSOR. BulletPoint3 : These KY-038 Microphone Modules are perfect for sound alarm system applications, are made of high quality material, and are durable to use. BulletPoint4 : For sound detection, KY-038 High Sensitivity Sound Detection Microphone Small Module for it has two outputs: AO and DO. BulletPoint5 : Product Color: Black Color : Charcoal CompatibleDevices : Personal Computer CompatibleDevices1 : Speaker CompatibleDevices2 : Laptop CompatibleDevices3 : Personal Computer CompatibleDevices4 : Headphone ConnectivityTechnology : USB ConnectivityTechnology1 : USB ConnectivityTechnology2 : Wi-Fi ConnectorType : USB Type-B ControlMethod : voice CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier : 9466447827999 ExternallyAssignedProductIdentifier1 : 0708310936490 ExternallyAssignedProductIdentifier2 : 708310936490 FrequencyRange : 20 hz - 20 khz FrequencyResponse : 24 KHz HardwarePlatform : Karaoke Machine HardwarePlatform1 : Laptop HardwarePlatform2 : PC HardwarePlatform3 : Karaoke Machine Impedance : 300 ohm IncludedComponents : Microphone ItemName : KY-038 High Sensitivity Sound Detection Small Microphone Module ItemPackageDimensions_Height : 20.5 centimeters ItemPackageDimensions_Length : 9.7 centimeters ItemPackageDimensions_Width : 13.8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : computer-microphones Manufacturer : RELAND SUN Material : Aluminum Material1 : Metal Material2 : Plastic MicrophoneFormFactor : Table Array ModelName : 40CLBLCKMP ModelNumber : 7260496 NoiseLevel : 47 decibels NumberOfChannels : 1 NumberOfItems : 1 PackageLevel : unit PartNumber : 40CLBLCKMP PolarPattern : Unidirectional PowerSourceType : Corded Electric ProductDescription : Specification: Item Type: Sound Sensor Module Voltage: 3-5V AO: Analog output, real-time output of microphone voltage signal Do: When the sound intensity reaches a certain threshold, output high and low level signals. (threshold sensitivity can be adjusted by potentiometer) 1. There are approx. 3mm / 0.1in mounting screw holes 2. Use 5V DC power supply 3. With analog output 4. Threshold flip level output 5. High sensitivity microphone 6. With power indicator 7. The comparator output has indicator lights