1 board ISD1820 chip;
2, operating voltage: 3 ~ 5V;
3, high-quality natural voice reproduction can be used as a propaganda module;
4, with a loop, jog playback, single-pass play function;
5, Size: 4.1 * 6.1CM;
Recording time with the sampling frequency change:
100K resistor such as oscillation resistor, the recording time 10S;
The oscillation resistor 160K resistance as recording time 16S;
In order to improve the sound quality, the module using 100K resistors do oscillation resistor, so the recording time of approximately 10S;
7 without microcontroller can be achieved with sound recording or reproducing with MCU control.