This is an E ink E paper display panel, 4.2 inch, 400x300 resolution, square, 24 pins FPC connection, 
optional FPC connector, communicating via SPI interface, with embedded controller(COG package) 
and on-chip stored waveform,  supports yellow, black, and white three-color.
 
In view of so many advantages: ultra low power consumption, near 180 degree view angle, readable under sunlight, 
low current deep sleep mode. Also GDEW042C37 can be used in:
 
· Shelf label
· Smart tags
· Industrial instrument, 
· Smart cards 
· And other related products.
Note: All of 3-color epaper doesn't support partial refesh.
 
 
· Three colors, black, white and yellow
· 400x300 resolution
· The I2C signal master interface to read built-in temperature sensor.
· Comes with helpful development resources and manual (STM32 platform )