Onboard mature and stable ESP-12F WiFi module with capacity 4M Flash.ESP-12F supports the of development such as for / IDE, and provides reference programs in the for development environment.The supply mode supports DC7-28V/5V.It is suitable for ESP8266 secondary development to learn wireless control and other occasions.Widely used in various scenarios and industrial automationThe I/O port and UART program download port of the WiFi module are all led out, which is convenient for secondary development.Onboard WiFi module reset button and a programmable button.ESP-12F supports the of development such asThe on-board Dual-way 5V/30A relay outputs switch signals, which are suitable for controlling loads whose working voltage is within AC250V/DC30V.Onboard indicator, 1 programmable LED and relay indicator.Colour:greenMaterial:PCBSize:83 x 68mmPackage Contents:1 x Development Board1 x Single Row Needle3 x Shorting 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.