Specification: Item Type:Network Relay;Power Supply:DC7~24V(DC socket or wiring terminal can be selected to input power.);DC Connector Size:5.5 x 2.1mm / 0.22 x 0.08in(Outer Diameter - Inner Diameter);Working Temperature Range:-40~85℃; This product involves complex processes that require professional personnel and specialized configuration tools to use; please purchase with caution. Working mode introduction:The working mode is configured with the provided configuration software.;1, TCP server:In this mode, the device can only be connected through the TCP client and supports the connection of 10 TCP clients. 2, TCP client:In this mode, the device actively connects to the TCP server (remote IP and remote port number are parameters for device connection). Only one server can be connected. 3, UDP server:In this mode, any UDP communication is supported. 4, UDP client:In this mode, only UDP communication is supported for remote IP and remote port number (configuration software settings). 5, DNS domain name:In this mode, the device connects to the TCP server (the port is the remote port) that binds the domain name with a TCP client. Users Manual: The output does not have voltage. The single relay has a DC rating of 10A, an AC rated current of 10A, a maximum AC rating of 250V, and a maximum DC rating of 30V. IN9 means full open, after IN9 has digital input, all relays are connected. IN10 means full off. When IN10 has output, all relays are off. The 8-input user of IN1-IN8 can be configured into three different working modes through the configuration parameter tool, and is selected under the "Input Mode" of the configuration tool. In the "normal input" mode, the ordinary input signal is acquired. To obtain the input status, a command to read the input status is sent to the device. "Trigger Relay" mode, after this mode has input, the corresponding relay state is reversed, and the IN1-IN8 control corresponds to the 1-8 relay. The device has an RS485 interface. It can be co