how to use KC868-HxB Relay Controller

1.Diagram of relay Controller A.KC868-H32BS B.KC868-H32B C.KC868-H16B D.KC868-H8B E.KC868-H4B F.KC868-H2B Led status different color means: Red: Controller is power on. Green: WiFi module is connect to your router successfully. White: network run in “TCP Client” mode. Yellow: network run in “TCP Server” mode. Blue: network run in “UDP” mode. what’s UDP , TCP Server, TCP…