Fangrui Product Details 1. Waveshare 4.2 Inch 400x300 E-ink Display Module, Spi Interface 2. Overview 3. This Is An E-ink Display Module, 4.2inch, 400x300 Resolution, With Embedded Controller, Communicating Via Spi Interface. 4. Due To The Advantages Like Ultra Low Power Consumption, Wide Viewing Angle, Clear Display Without Electricity, It Is An Ideal Choice For Applications Such As Shelf Label, Industrial Instrument, And So On. 5. Features 6. No Backlight, Keeps Displaying Last Content For A Long Time Even When Power Down 7. Ultra Low Power Consumption, Basically Power Is Only Required For Refreshing 8. Spi Interface, For Connecting With Controller Boards Like Raspberry Piarduinonucleo, Etc. 9. Onboard Voltage Translator, Compatible With 3.3v5v Mcus 10. Comes With Development Resources And Manual (examples For Raspberry Piarduinostm32) 11. Specifications 12. Operating Voltage: 3.3v~5v 13. Interface: 3-wire Spi, 4-wire Spi 14. Outline Dimension: 103.0mm × 78.5mm 15. Display Size: 84.8mm × 63.6mm 16. Dot Pitch: 0.212 × 0.212 17. Resolution: 400 × 300 18. Display Color: Black, White 19. Grey Level: 2 20. Full Refresh Time: 4s 21. Refresh Power: 26.4mw(typ.) 22. Standby Power: 170 Degree 23. Weight: 0.052 Kg 24. Interface 25. Symbol: Description 26. Vcc: 3.3v~5v 27. Gnd: Ground 28. Din: Spi Mosi Pin 29. Clk: Spi Sck Pin 30. Cs: Spi Chip Selection, Low Active 31. Dc: Datacommand Selection (high For Data, Low For Command) 32. Rst: External Reset, Low Active 33. Busy: Busy Status Output, Low Active 34. Package Contents 35. 4.2inch E-paper Module X1 36. Ph2.0 20cm 8pin X1