ISD1820 recording module voice module the voice board module board with Microphones + Loudspeaker Product introduction: 1. Main chip: ISD1820 2. Size: 38mm*42.5mm 3. Working voltage: DC 3~5V Fourth, the main features 1. Easy-to-use 10-second voice recording and playback 2, high-quality, natural voice restoration 3, can be used as a megaphone module 4, with loop playback, jog playback, single-pass playback function 5, can be controlled by single-chip microcomputer 6. This module can directly drive 8 ohm 0.5W small speakers Power supply: 3-5V, can be connected to the pin header to power on; Recording and playback control mode: button control or single-chip microcomputer, the control line IO has been led out; Key-press control method of recording and playing sound: REC button: recording button, press and hold to record, release the button to stop recording; RLAYE key: Play in trigger mode, press once to play the current whole voice; PLAYL key: Play in jog mode, press and hold to play, release to stop playing; RPL jumper: loop playback mode control, loop playback is possible; FT jumper: pass-through control, can make the microphone voice pass through to the speaker; Shipping list: Voice module *1 0.5W 8R speaker *1 XH2.54 with thread head*1