Place of Origin: Zhejiang, China Brand Name: KinCony Model Number: KC868-H4B Theory: Electromagnetic Relay Usage: AUTO Size: Miniature Protect Feature: Sealed Contact Load: High Power Security Channels: 4 Relay Control Channels: 4 Communication Port: Wifi+Ethernet+RS232 Max Current: 10A/Gang Network Control Mode: LAN (Local:Withour Internet) OR WAN Supporting Programmable Control Mode: CS & BS Provide Control Sample Source Code: C++, VB, Delphi, Python, iOS, Android Technical Support Mode: Email, Telephone,Teamview Provide Communication Protocol Documents: Yes Product Video Instructions: YouTube