Onboard mature and stable ESP-C3-12F module, -capacity 4M Flash.The I/O ports and UART program download ports of the ESP32-C3 module are all led out, which is convenient for secondary development.Onboard AC-DC and DC-DC switching supply module, supply mode supports AC90-250V/DC7-12V, onboard ESP32-C3 module EN button and IO9 programmable button.ESP32-C3 supports the for IDE development and provides reference programs in the for development environment.On-board 1-way 5V relay, output switch signal, suitable for controlling loads with working voltage within AC250V/DC30V; on-board indicator, 1 programmable LED and relay indicator.Type: development boardSupply voltage: AC90-250V/DC7-12VColour: blueMaterial: PCBSize: 80x50mmPackage Contents:1 * Development Board2 * Double Row Needles1 * Single Row Needle1 * Single Line CapOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.