Welcome to our shop! This sound sensor module is perfect for your needs. It uses a professional microphone amplifier IC, ensuring high sensitivity. The module has a small size and low output noise, with a fixed gain of 20dB. It supports both 3.3v and 5v power supply. The sensor has low power consumption, making it easy to control. It is also more stable and efficient. With its small size and stable performance, installation is simple. This microphone sound sensor module is suitable for assembly and can be installed on various small equipment like microphones and robots. It features analog output, providing real-time output of the microphone voltage signal. When the sound intensity reaches a certain threshold, it will output high and low level signals, which can be adjusted by a potentiometer. The module comes with 5 sound sensor modules, each with approximately 3mm / 0.1in mounting screw holes. It requires a 5V DC power supply and has a power indicator. The comparator output also has indicator lights. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service. Thank you for choosing our shop. We hope you have a great shopping experience!