Catalog > Internet of Things (IOT) Related Products > More Platforms ISD1820 Sound Voice Module ISD1820 Sound Voice Module With Mic Sound Audio Loudspeaker CMU MESSAGE RECORDER ISD1820 ISD1820 10 SEC MESSAGE/VOICE RECORD-PLAY MODULE Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Features With looping, jog playback, single-pass play function Available single-chip control This module can directly drive a small speaker 8 ohm 0.5W Working voltage: DC 3 to 5V Loudspeaker: 8Ω, 0.5W (Included) Power supply: 3 - 5V Size: 3.7 x 4.1cm / 1.45 x 1.61 inch Downloads Datasheet - ISD1820 PDF File 162.04 KB