4-way network IO controller

4-way network IO controller

Model: USR-IO424T-GR

  • Support USR Cloud function and can realize remote control directly after powering on
  • Be adaptive to Modbus TCP/RTU protocol
  • Support Master mode and Slave mode for user to choose

4-way network IO controller

General Details

Product overview


USR-IO424T-GR is network IO product which supports 4-way input/output, 2-way analog quantity detection, 1-way temperature detection and Modbus RTU/TCP protocol. Take ‘Remote control’ as core function and have high usability. User can easily and quickly integrate USR-IO424T-GR into own system to realize remote control which based on GPRS network.


Product features

l  Support 4-way Relay output

l  Support 4-way input, default is dry contact

l  Support 2-way analog input, default are voltage detection

l  Support 1-way PT100 temperature input

l  Support 8 conditional control command

l  Support various function code: 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x0F, 0x10

l  Support socket to connect to remote server and TCP Client

l  Support two work modes: Master mode and Slave mode. Master mode supports connecting to multiple Modbus RTU devices by RS485 cascading connection.

l  Adopt Modbus RTU protocol data processing. Support Modbus TCP/RTU protocol adaptation.

l  Support connecting to USR Cloud.

l  Support FTP remote upgrade.

l  Support upgrading by RS485.

l  Support hardware watchdog.

l  Support various LED to indicate work status.


l  Support power supply over-current, over-voltage, anti-reverse connection protection. 







Parameter  Value
Wireless parameters  
Wireless standard GSM/GPRS
Standard frequency band


Transmitting power
GSM900 class4(2W)    
DCS1800 class1(1W)
GPRS Terminal Device Class Class B
GPRS Multi-slot Class  GPRS Class 10
GPRS Coding Schemes  CS1~CS4
Hardware parameters  
Data interface

Serial port: Support RS485.

Baud rate: 300bps~230400bps

Working voltage 12V~36V
Voltage acquisition Range: 0V~10V
Temperature detection Range: -100℃~200 ℃
Working temperature -20℃~+70℃
Storage temperature -40℃~+85℃
Working humidity 5%~95%
Storage humidity 1%~95%
Software parameters  
Dimension 123*114*28mm
Wireless network type GSM/GPRS
Work mode

Master mode, slave mode

Configuration command Modbus RTU
Network protocol Modbus TCP, Modbus RTU
Application software Support configuration software

Software function 

DNS Support
Data transmission mode

Support TCP Client

EMC level  
ESD IEC61000-4-2, Level 4
Surge IEC61000-4-5, Level 3
Group pulse  IEC61000-4-4, Level 3


How to Buy

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