Specification Brand : Generic BulletPoint : Microphone noise decibel sound sensor measurement modules 3p / 4p Interface for Arduino BulletPoint1 : 【Superior Sound】- Experience clear and audio quality with our Electret Microphone Amplifier boasting a 20-20KHz soldered electret microphone. BulletPoint2 : 【Stable 】- To secure a stable performance, the pins on our Microphone Amplifier showcase remarkable reliability. BulletPoint3 : 【Specific Design】- Utilizing the op-amp MAX4466, specifically designed for amplifiers, our Audio Amplifier ensures maximum efficiency for your projects. BulletPoint4 : 【Versatile Use】- Create vocal converters, audio recording amplifiers, and audio responsive projects with ease using our Amplifier. for projects that require FFT. BulletPoint5 : 【Adjustable Gain】- With a small trimmer potentiometer on the back, our Electret Microphone Amplifier allows you to adjust the gain from 25 to 125 times, down to about 200mVpp from about 6 inches away. Color : #111 ItemName : Electret Microphone Amplifier Sensor Sound Module Adjustable Electrical Equipment 2Pcs Electret Microphone Amplifier Sensor CMA 4544PF W ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 8 centimeters ItemPackageDimensions_Width : 6 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : microphone-elements Manufacturer : Generic Material : Copper ModelName : Genericunvg83m4kw ModelNumber : Genericunvg83m4kw NumberOfItems : 1 PartNumber : Genericunvg83m4kw ProductDescription : 1. Soldered 20-20KHz electret microphone on board 2. The pin has good performance, ensure stable working 3. Use the op amp designed for amplifiers 4. Ideal for projects that use FFT, such as voice converters, audio recording amplifiers, and audio projects 5. On the back side, include a small trimmer potentiometer to adjust the gain. The gain can be set from 25 times to 125 times, down to about 200mVpp (normally, about 6 inches away)