[Features] 1. There are 3mm mounting screw holes 2, use 5v DC power supply 3, analog output 4, there is a threshold turnover level output 5, high sensitivity microphone, high sensitivity. 6. There is a power indicator 7. The comparator output has an indicator [product information] Product name:Microphone sensor module Color:red Packing list (you can get after purchasing one item): Microphone sensor module*1 Please understand: 1. Due to the long shipping time, the item may be damaged during the shipping process, if the item is damaged, please leave us a message through the official website immediately before posting comments, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Colors may vary from monitor to monitor. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia