Features Practical accessory: the microphone is a single mono element. You can choose whether you want it to be on the left or right channel by connecting the selection pin to the power or ground. Universal Application - The I2S is a small, low-cost MEMS mic, good for just about any general audio recording/detection. Simple operation - Instead of analog output, there are three digital pins: clock, data and left-right clock (word selection). Quick Response - When connected to your microcontroller/computer, the 'I2S Master' will drive the clock and word selection pins at a high frequency and read the microphone data. Use the instructions - If you need stereo, take two microphones! You can configure them in stereo by sharing Clock, WS and Data lines but having one with Select ground and one with Select at high voltage. Specification: Condition: 100% Brand New VIN/Logic: 3.3V Package list: 1 x Microphone Output Card Note: This I2S MEMS microphone is worn from the bottom, so make sure the bottom hole is oriented towards the sounds you want to play. It's a bigger 1.6-3.6V device only, so not for use with 5V logic (it's really unlikely you have a 5V logic device with I2S anyway). Many microcontroller boards for beginners don't have I2S, so make sure it's a supported interface before you try to wire it! This microphone is best used with Cortex M series chips such as Feather M0 or single-board computers. Package List