Low Cost Serial TTL to Ethernet Modules | IoT Modules

Serial TTL to Ethernet Module

Model: USR-TCP232-T2

USR-TCP232-T2 is a Low Cost Solution Serial TTL to Ethernet Module, It supports data transferred over LAN network or Internet to remote serial port.
  • Cost Effective
  • VCC 3.3V or VDD 5V
  • Web page configuration / DHCP & DNS

Low Cost Serial TTL to Ethernet Modules | IoT Modules

General Details

Introduction of Serial UART Ethernet Module

USR-TCP232-T2 Serial TTL to Ethernet Module which can realize data bidirectional transparent transmission between serial TTL and RJ45 Port. USR-TCP232-T2 is based on Cortex-M0 core- low cost solution. It has characters of low power, fast speed and high efficiency.


Serial UART Ethernet Module – M0 Series

Solution Cost-Effective, -25~75C
Keep-Alive Detect the inactive connection, rebuild connection automatically
Built-In Webpage Configure parameters
DHCP+DNS DNS and DHCP automatically obtain an IP address
Firmware Upgrade firmware via network
Client connection Support 1 to 16 clients to be connected in TCP server mode


Feature of Serial UART Ethernet Module

DHCP &DNS, automatically obtain an IP address and query IP address through serial setting protocol

Set parameters through webpage and serial AT command

Upgrade firmware via network

Auto-MDI/MDIX, RJ45 port with 10/100Mbps

Serial port baud rate from 600 bps to 460.8 Kbps, Check bit of None,Odd,Even,Mark and Space

Work mode: TCP Server, TCP Client, UDP Client, UDP Server, HTTPD Client

Support virtual serial port and provide corresponding software USR-VCOM

Heartbeat package mechanism to ensure connection is reliable, put an end to dead link

User-defined registration package mechanism, check connection status and use as custom packet header

Under TCP Server mode, Client number ranges from 1 to 16; default number is 4

The global unique MAC address bought from IEEE, user can define MAC address

Restore factory default

Across the gateway, switches, routers

Can work in LAN, also can work in the Internet (external network)

Provide PC TCP/IP socket programming example such as VB,C++,Delphi,Android and IOS

Support customization


Application Field of Serial UART Ethernet Module

Industrial data transmission, industrial automation

security and protection monitoring, public security

Smart home, power control, environmental monitoring, intelligent agriculture

Door check on work attendance system, POS system, rice selling system

Building automation system, power monitoring, self-service banking system, telecom machine room monitoring


Image of Serial UART to Ethernet Module

Image of Serial UARTto Ethernet Module


System Information  
Processor ARM
Flash 32K byte
Port Number 1
Interface Standard RJ45
Rate 10/100 Mbps, MDI/MDIX, auto switch between cross and direct connection
Protection 2KV electromagnetism isolation
Network Protocol IP, TCP, UDP, DHCP, DNS, HTTP, ARP, ICMP
Buffer Send: 6K bytes, receive: 4K bytes
Port Number 1
Interface Standard TTL
Data Bits 5, 6, 7, 8
Stop Bit 1, 2
Check Bit None, Even, Odd, Space, Mark
Baud Rate 600 bps ~ 460.8 Kbps
Flow Control Null
Buffer Receive: 800 bytes
RS-485 Pull-up and Pull-Down Resistor Null, reserved 485 send-receive control pin
Virtual Serial(USR-VCOM) Windows 2000 or higher (32 bit/64 bit)
Configuration computer set-up software, serial command, built-in webpage, AT command
Basic Parameter  
Size 50.5 x 22.6 x 15.0 mm
Operating Temp. -25~ 75°C
Storage Temp. -40 ~ 105°C, 5 ~ 95% RH
Input Voltage VCC DC 3.0V~3.6V
VDD DC 4.75~7.0V
Working Current 150mA (aver) / 160mA (max) @3.3V
150mA (aver) / 160mA (max) @5V
Power <1W
Warranty 2 years
Accessory Null

How to Buy

Official Online ShopClick to order USR-TCP232-T2
Alibaba Online ShopClick to order USR-TCP232-T2
Contacts SalesYou can leave a message for our sales below.








3.0-3.6 V


4.75–7.0 V

4.75 – 7.0 V


Baud rate(bps)



Serial number





Modbus gateway --
Websocket --
Customize webpage --


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