ISD1820 3-5V Voice Module Recording And Playback Module with Microphone and 0.5W Speaker 3-6V Mini Submersible Water Pump What is the difference between

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ISD1820 3-5V Voice Module Recording And Playback Module with Microphone and 0.5W Speaker 3-6V Mini Submersible Water Pump What is the difference betweenISD1820 3 5V Voice Recording and Playback Module with Microphone & 0. 5W Speaker Add voice recording and playback capabilities to your projects with this compact ISD1820 module from The Engineer Store, Bengaluru. Record up to 10 seconds of audio, store it in non volatile memory, and play it back on demand perfect for talking greeting cards, alarm systems, interactive toys, and voice activated projects. Ships complete with an onboard electret