This is a universal driver board for e-Paper raw panels, thanks to the WiFi connectivity, it is allowed to display images from PC / smart phone via WiFi conveniently.Furthermore, it can also be used for development, just like any other normal board. Onboard ESP8266, supports developmentProvides HTML host code, allows to refresh display content via remote webpage, suit for Internet applicationsSupports Floyd- dithering algorithm, more color combinations, better shadow rendering for the . Supports popular formats: BMP, JPEG, GIF, PNG, etc.WiFi protocol: 802.11b/gInterface: 3-wire SPI, 4-wire SPI (default)Operating voltage: 5VOperating current: 50mA ~ 100mAOutline dimension: 29.57mm x 48.26mmMounting holes size: 2.9mmColour:blueMaterial:PCBPackage Contents:1 x e-Paper ESP8266 Driver BoardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.