Features: 1.No backlight, keeps displaying last content for a long time even when power down. 2.Ultra low power consumption, basically power is only required for refreshing. 3.Comes with four buttons for the expansion of applications 4.Suitable for Raspberry Pi 2B/3B/Zero/Zero W. 5.Serial Peripheral Interface, to connect with other controller boards like for A?rduino/Nucleo, etc. specification:Description: This E-Ink display HAT, 2.7inch, 264x176 resolution, is specially designed for Raspberry Pi. Comes with embedded controller, communicating via Serial Peripheral Interface interface. Due to the advantages like ultra low power consumption, wide viewing angle, great effect under sunlight, it is an ideal choice for applications such as shelf label, industrial instrument, and so on. No backlight, keeps displaying last content for a long time even when power down. Ultra low power consumption, basically power is only required for refreshing. Comes with four buttons for the expansion of applications Suitable for Raspberry Pi 2B/3B/Zero/Zero W. Serial Peripheral Interface, to connect with other controller boards like for A-rduino/Nucleo, etc. Comes with development resources and manual (examples for Raspberry/A-rduino/STM32). s: Operating voltage: 3.3V Interface: 3-wire Serial Peripheral Interface, 4-wire Serial Peripheral Interface Outline dimension: Approx. 85mm x 56mm Display size: Approx. 57.288mm x 38.192mm Dot pitch: 0.217 x 0.217 Resolution: 264 x 176 Display color: black, white Grey level: 2 Full refresh time: 6s Refresh power: 24mW(typ.) Standby power: 170 Package weight: 42g Interface: VCC: 3.3V GND: GND DIN: Serial Peripheral Interface MOSI pin CLK: Serial Peripheral Interface SCK pin CS: Serial Peripheral Interface chip selection, low active DC: Data/Command selection (high for data, low for command) RST: External reset, low active BUSY: Busy status output, low active Package List: 1 x 2.7inch e-Paper HAT 1 x Screws Pack(2sets) Note: 1. If you want more tutorials and instructions about this product, please contact us, we will send related information to you.