Vision Master E213 is an E-Ink development kit with multiple wireless drive methods. Collaborate with the sample programs and development tools we provide, users can operate the display via Bluetooth, Wi-Fi and LoRa.This board is equipped with a default 2.13-inch black and white E-Ink display screen, continuous display for 180 days after power outage. It is compatible with , PlatformIO, Micpython and other development frameworks, can be used to develop applications such as electronic tags and identity tags, it is also possible to run open source projects like Meshtastic.Main Features:ESP32-S3FN8 MCU, support Wi-Fi and BLE.Low power consumption, 20uA in deep sleep, continuous display for 180 days after power outage.Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB or battery power automatic switching).Onboard 2.13 inch 250 x 122 pixels display, support for partial refresh.Storage condition: -25 - 70, 45 percent RH.Optimal operating condition:0-50, 5510 percent RH.2xSH2.0-4P sensor interface is perfectly compatible with QuickLink series sensors.Compatible with for , we provide development frameworks and libraries.(Due to different product batches, the appearance , which does not affect the use)Material: PlasticandPCcolour: As shownSpecification: BPackage Contents:1 x 2.13 Inch E-Ink Display(433MHz)Only the above package content, other products are not included.Note: Light reflection 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.