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Chapter 4 Product Features
4.1Basic parameters
4.1.1Basic parameters
The SN code is a traceability code written when the device leaves the factory, highlighting the
batch number of the device. It can only be read, not written.
The device model is the full name of the current device model. You can use this model to obtain
information from the official website.
The firmware version is the factory firmware model of the current device. You can download the
latest firmware update from the official website.
The MAC address is the physical address of the chip and is a unique identification code.
4.1.2IP address type
The IP address is the identification of the module in the LAN and is unique in the LAN.
Therefore, it cannot be duplicated with other devices on the same LAN. There are two ways to obtain
the module 's IP address: static IP and DHCP.
（1） Static IP : Static IP requires manual setting by the user. During the setting process, pay
attention to writing the IP, subnet mask and gateway at the same time. Static IP is suitable for
scenarios where IP and device statistics need to be collected and corresponded one-to-one.
Advantages: Access devices that cannot be assigned an IP address can be searched through the
whole network segment broadcast mode , which facilitates unified management ;
Disadvantages: Different network segments in different LANs result in the inability to carry out
normal TCP/UDP communication.
（2） Dynamic DHCP : The main function of DHCP is to dynamically obtain IP address, gateway
address, DNS server address and other information from the gateway host, thereby eliminating
the cumbersome steps of setting the IP address. It is suitable for scenarios where there are no
requirements for IP and there is no one-to-one correspondence between IP and modules.
Advantages: Access routers and other devices with DHCP Server can communicate directly,
reducing the trouble of setting IP address gateway and subnet mask.
Disadvantages: When connected to a network without DHCP Server, such as directly connected
to a computer, the module will not work properly.
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NE2-S1/NE2-S1-TB User Manual
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