Specification Brand : Eujgoov BulletPoint1 : This module uses professional microphone amplification IC, low output noise BulletPoint2 : It has high sensitivity, fixed gain is 20dB BulletPoint3 : Supports two power supply voltages: 3.3V and 5V BulletPoint4 : It has separate pins for both analog and digital output, default output is analog BulletPoint5 : Add an ear to your project with this well-designed microphone amplifier ItemName : Eujgoov DC 3.3V/3.5V Microphone Amplifier Sound Sensor Sound MIC Voice Module 20dB Fixed Gain ItemPackageDimensions_Height : 4.8006 centimeters ItemPackageDimensions_Length : 1.0922 centimeters ItemPackageDimensions_Width : 3.81 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : microphone-elements Manufacturer : Eujgoov Material : pcb plate NumberOfItems : 1 PartNumber : Eujgoova3f6gec7nz598 ProductDescription : Specifications: Power Supply Voltage: 3.3V/5V Fixed Gain: 20dB Output: Analog (default) Size: Approx. 41 x 11mm/1.61 x 0.43in