1、No Need for Backlight: The last screen can be kept for a long time after power off. The power consumption is very low, and basically only consumes power when refreshing. It is based on the Raspberry P40 PIN GPIO interface design. 2、Applicability: Applicable for Raspberry Pi series motherboards leading to the USB/SP/80 control interface, which can be connected to Raspberry P/STM32 and other main control boards. 3、Working Principle: The electronic ink screen uses the "microcapsule electrophoresis display" technology for image display. The working principle is that the charged nanoparticles suspended in the liquid are subjected to the action of the electric field to migrate, and reflect under ambient light to form a display close to the traditional printing paper. Effect. 4、Clear: The electronic ink screen can clearly display the picture under ambient light such as lighting, natural light, etc., without backlight, and the viewing angle is almost 180°. Because of its display effect comparable to traditional paper, it is often used in applications such as readers. 5、Multipurpose: Suitable for shopping mall price tag, asset equipment tag, electronic shelf tag, conference name tag, etc. 1 x Electronic Ink Screen1 x Adapter Cable1 x E Paper Adapter Card1 x E Paper Driver Hat2 x Column Screw3 x Screw3 x Nut1 x USB Cable Item Type: E Paper DisplayMaterial: LCD, PCBWorking Voltage: 5VCommunication Interface: USB/SPI/I80Shape Size: Approx. 285.80 x 213.65mm / 11.3 x 8.4inDisplay Size: Approx. 270.40 x 202.80mm / 10.6 x 8inDot Pitch: Approx. 0.169 x 0.169mm / 0.007 x 0.007inResolution: 1600 x 1200 PixelsDisplay Color: Black, WhiteGray Scale: 2-16 Levels (14 Bits)Global Refresh: <1sRefresh Power Consumption: 1.2W(typ.)Sleep Current: < 0.1WViewing Angle: >170°`