Features Versatile Connectivity Options - Supports TCP server, TCP client, and UDP modes, allowing seamless integration into your smart home system with multiple connection types Multiple Client Support - Operates in TCP server mode with the ability to handle 4 simultaneous client connections, enhancing efficiency for diverse applications Customizable Features - Easily update the program online and assign device names, eliminating the hassle of managing multiple IP addresses for convenience Features: 1、Support working in TCP server, TCP client and UDP mode 2、Working in TCP server mode supports 4 client connections. Support for MODBUS TCP protocol, support for KingView 3、Support online update program, very convenient for customers to customize the program 4、Can customize the device name, support Chinese definition, do not need to record tedious IP when there are many devices 5、User-defined heartbeat packet time, reliable network recovery 6、A 32-bit single-chip microcomputer with a high-performance for Cortex-M3 core is used, and the network chip is a W5500 with a hardware protocol 7、2-channel 10A relay controllers, with normally open output without normally closed output, can be used for smart home control, and can be used to remotely control electric lights, motors, and other electrical equipment using mobile phones or computers for secondary development 8、Provide host computer C ++ source code, reliable network connection, router restart after disconnection, reliable network connection recovery, remote control across gateways 9、5V power supply for this product, with two relays normally open output, without normally closed output Specification: Item Type: IP Network Relay Module Supply Voltage: 5V Current: Not less than 1A Two-channel relays can reach a single function rate of 2KW, AC load rated voltage 250V, current 10A, DC load rated voltage 30V, current 5A Size: Approx. 81 x 50 x 31mm / 3.2 x 2 x 1.2in Operating Temperature: -40℃ to 80℃. Applications: 1.Can be used for smart home control, control router restart after network disconnection, etc. 2. It can remotely control electric light, motor, and other electric equipment using mobile phones or computers for secondary development. 3. Can be used for power failure detection in the computer room, can be connected to human body infrared sensors, can be connected to key switches, can be connected to smoke alarm outpu Package List 1 x IP Network Relay Module(with case)