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Description: 1. The ISD1820 Sound Voice Board is a versatile IoT component designed for voice recording applications in various projects and systems. 2. It features a built-in microphone amplifier, making it easy to integrate into any project without the need for additional external components. 3. This module supports WAV and MP3 audio formats with adjustable sampling rates between 8kHz and 48kHz, offering flexibility for various use cases. 4. The ISD1820 Sound Voice Board includes an onboard SD card interface, allowing users to store recordings directly onto a microSD card, offering ample storage capacity for extended projects. 5. This module features an adjustable gain control, ensuring optimal recording levels and high-quality sound in different environments and conditions. 6. It comes with a low power consumption design, making it ideal for battery-powered projects and applications where minimizing energy usage is essential. 7. The ISD1820 Sound Voice Board supports external triggering,
| Specification | Details |
|---|---|
| Model Number | ISD1820 |
| Module Type | Digital Audio Recorder Module |
| Microphone | Built-in Electret Condenser Microphone |
| Analog-to-Digital Converter (ADC) | 12-bit Resolution: 4.8K/6.3K Hz |
| Sampling Rate | 10/11/12 bits Selectable by jumper |
| Recording Time | Up to 64 seconds per record |
| Audio Output | Built-in Speaker and Audio Jack (3.5mm) |
| Power Supply | 3V or 5V via USB or battery |
| Current Consumption | Typical: 4mA (5V) Max: 10mA |
| Operating Temperature | -20°C to +70°C |
| Storage Temperature | -40°C to +80°C |
| Dimensions | 45mm x 25mm x 8.1mm |
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