Feature:1. INDUSTRIAL MICROCONTROLLER: Enhanced capability with industrial grade STC microcontroller + ENC28J60: benefit from the stable firmware on TCP server mode supporting up to 6 network connections, along with UDP control for cloud based remote operations.2. SIMPLE CONTROL COMMANDS: Easily open or close relays by sending 11 to open the first relay, 21 to close it, 11* for momentary action, and 11K to simulate local key press (for applicable models).3. ROBUST 8 BIT COMMAND SYSTEM: Execute complex actions like setting a 10 second auto off delay with 11:10, (delay support 1-65535 seconds); Send 00 to return all channel status.4. FULLY SUPPORTS CUSTOMIZATION: Seamless integration with local connections, cloud control, and demonstration programs for PCs and mobile devices with provided source codes. DLL encapsulation for module configuration and scheduling programs adds versatility.5. EXPANDABLE HARDWARE OPTIONS: Utilize the header pins for connecting real time clocks, 485, Bluetooth, 2.4G modules, and automatic synchronization with NTP for up to 32 precise scheduling points with less than 1 second timer deviation.6. FLEXIBLE SCHEDULING OPTIONS: Set up one time or recurring tasks on a yearly, monthly, daily, weekly, hourly, minute by minute, or second by second basis for convenient automation tailored to specific needs.Specification:Item Type: LAN Ethernet 2 Way Relay BoardMaterials: PCBInterface Description:+5V: +5V power supply positive pole, input or outputGND: Power ground, input or outputP30-P35: Control lines for CH3-CH8, active highCLR: Short circuit CLR and power on the module to restore factory settingsBlue Terminal: Connect to user load, can be used with AC devices or DC devices less than 30V..Package List:1 x LAN Ethernet 2 Way Relay Board