Our MaTouch ESP32-S3 4.2 Triple-Color E-Ink display is equipped with the SE0420MN11-A0 model, which uses microcapsule electrophoretic technology to show images. This technology works by applying an electric field to charged particles that are suspended in a clear fluid. The particles move to the sides of microcapsules and become visible by reflecting ambient light, similar to traditional printed paper. 

The display has an active area of 400 x 300 pixels and full display capabilities of triple color: 1 bit B/W/R. In addition, there are the following advantages：

• The device keeps displaying the last content for an extended period even after power down.
  
• It consumes ultra-low power and requires power only for refreshing.
• It uses an SPI interface and demands less IO pins, leaving extra pins for I2C and GPIO expansion. 
• It supports a 3.7V battery or a 5.0V Type-C power supply.
• The device has two buttons that provide sliding up, sliding down, and pressing functions to enable six interactive points.
• The device features an ESP32S3 controller with WiFi and Bluetooth support.

LCD Specs:

• PART NUMBER：GDEH042Z21
• SIZE：4.2 inch
• TYPE：Dot Matrix
• IC：UC8276
• RESOLUTION：400x300
• OUTLINE SIZE(mm)：91x77x1.25
• ACTIVE SIZE(mm)：84.8x63.6
• PIXEL PITCH(mm)：0.212x0.212
• OPERATING TEMP.：0°C~40°C
• STORAGE TEMP：-25°C~60°C
• CONNECTOR：24 Pin FPC
• MAX GRAYSCALE：2
• COLOR：Black, White, Red
• INTERFACE：SPI
• FULL REFRESH(S)：15
• POWER CONSUMPTION OF THE REFRESH(MW)：8.91
• STANDBY POWER CONSUMPTION (mW)：0.0056

Features：

• Controller: ESP32-S3
  
• Wireless: WiFi& Bluetooth 5.0
• Flash:16MB Flash
• PSRAM:8MB
• EXPANSION INTERFACE: 1 * GPIO, 1 * I2C
• MICRO SD: Yes
• BUTTON: Flash button and reset button
• USB: 1 * USB to UART, 1 * USB_native
• INPUT VOLTAGE: 3.7V Battery or 5.0V Type-C
• Arduino support: Yes

Documentations:

• ESP32-S3 series datasheet
  
• Wiki
• Github

Package Includes:

• 1 x Makerfabs MaTouch ESP32-S3 4.2" Triple-Color E-Ink