Features:Convenient 10 second voice recording and playing. High quality, voice restoration naturally. Can be used as megaphone module. With loop playing, inching-play and single-play functions. Can be controlled by single chip microcomputer. This module can directly drive the 8 0.5W small speaker. Specifications:Material: ABS-plasticLength: Approx. 4.25cm/1.673inchMain Chip: ISD1820Working Voltage: DC3-5VPower Supply: 3-5V, which can connect to the pin for power onRecording and Playback Control Mode: key-control or microcontroller, IO-control line has been led outKey-controlled Audional Recording and Playback Operation Method:REC-key: recording button, press and hold to record, release to stop recording;RLAYE-key: trigger-mode playback, press once toplay the current whole voice;PLAYL-key: inching-mode playing, press and hold to play, release to stop playing;RPL-jumper: controlled by looping mode, which can be looped;FT-jumper: direct control, which can make the microphone voice direct to the speaker for playback; Note:Please allow 0-1cm error due to manual measurement, make sure you do not mind before you order.Please allow slight chromatic aberration due to different display resolutions. Package includes:1 Set ISD1820 Voice Module