- 100% Brand New - Microphone Sensor High Sensitivity Sound Detection Modules for Ar-duino PIC AVR - Can be used to detect the sound intensity of ambient - With analog output and threshold level output flip - High sensitivity and high efficiency - Has two outputs: AO, analog output, real-time output voltage signal of the microphone - DO, when the sound intensity reaches a certain threshold, the output high and low signal - Durable and reliable to use - Has 3mm mounting screw hole - Uses 5V DC power supply - Has power indicator light - The comparator output is light