batteries not included Accuracy ± 5% Number of Battery Option1: built-in battery box: 3 * AA battery
TinyML Demo Models Provided for Quick Test
SIM868 control button: press the button and hold for 1s
Tag Recognition: Recognize pre-defined tags for interactive projects
Waveshare 3.97inch 4 Color E-Paper Display (G) with Driver Board 800 x 480 R-LINK V3.0 batteries not included Accuracy ±Details 3. 97inch E Paper Display (G), E Ink Display, 800 480 pixels, Red Yellow Black White, SPI Interface, Standard Raspberry Pi 40PIN GPIO header 3. 97 e Paper (G) low power, wide viewing angle, paper like effect without electricity Ideal for price tags, shelf labels, industrial instruments Note: the driver board is optional, please refer to the Package Content for detailed part list Version Options 3. 97inch e Paper (G) raw display, without driver