Features: The ISD1820 voice recording module delivers highly quality auditory capturing with a built in microphone and integrated 0.5W loudspeaker for clear playback, ideal for instantly voice feedbacks applications. Featuring intuitived control pins and up to 20 seconds of adjustable recording time, this module enables seamless operating for message storage and playback without external devices. Designed for electronics enthusiasts, educators, and innovators, this module simplifies prototyping for voice activated projects and interactive learning tools. Perfect for embedding voice prompts in security systems, crafting talking gadgets, or enhancing stem with real time auditory interaction capabilities. Crafted with durability ABS housing and multi functional pin interfaces, it seamlessly integrates with sensors and switches for expanded circuit design flexibility. Specifications: Component: ABS. Dimensions: 43x38mm/11.69x1.5in Weight: 20g. Working voltages: DC3-5V. Package Includes: 2PCs ISD1820 voice Recording module note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.