Four Independent Branches
Each group can send and receive data independently without simultaneous bus switching.
IOT9024I
4-Port RS485 Photoelectric Isolation Hub
Distribute one serial network across four independently isolated RS485 branches.
Protect and expand industrial RS485 networks with four branches, per-port isolation and wide-range DC power.
Hover to zoomDTECH IOT9024I 4-port RS485 photoelectric isolation hub front view
Serial InterfacesRS232 / RS485TIA/EIA compatible
RS485 Branches4Independent send and receive
Data Rate300–921600 bpsPlug-and-play operation
Isolation2500Vrms per portPhotoelectric isolation
Power InputDC 9–38VWide-range input
Product Overview
A practical path for bringing installed serial equipment into modern industrial data networks.
The IOT9024I is a four-port RS485 photoelectric isolation hub designed to divide an industrial serial network into four independently communicating branches.
Each group can send and receive data separately and connect up to 32 RS485 devices, helping integrators expand field networks while limiting the impact of electrical interference and branch faults.
4isolated RS485 branches
Expand one upstream serial network across multiple field segments.
921600bps maximum rate
Supports high-speed industrial serial communication.
2500Vrmsisolation per port
Electrical isolation is specified for every branch.
32devices per group
Supports distributed field device networks.
Key Features
Core capabilities selected for reliable integration, flexible deployment and efficient maintenance.
Per-Port Photoelectric Isolation
Each branch is specified with 2500Vrms photoelectric isolation.
High Serial Data Rate
Supports communication rates from 300 to 921600 bps.
Branch Device Capacity
Each RS485 branch can connect up to 32 devices.
Surge and ESD Protection
RS485 lines include specified 600W surge and ±15kV ESD protection.
Wide DC Power Input
DC 9–38V input supports industrial control cabinet integration.
Industrial Applications
Explore practical deployment scenarios for this DTECH industrial connectivity product.
Industrial Automation
Distribute controller communications across multiple production cells.
Building Automation
Separate RS485 branches for access, metering and building control devices.
Distributed Monitoring
Connect multiple groups of sensors and meters to one upstream serial network.
System / Network Architecture
See how this product fits into an industrial serial communication network.
RS232/RS485 Main PortPLC, controller, gateway or supervisory system
Serial data
Protected branches
Four Independent RS485 GroupsUp to 32 RS485 field devices per group
Technical Specifications
Verified configuration details for engineering review and product selection.
Communication
- Communication interfaces
- RS232 and RS485, compatible with TIA/EIA standards
- RS485 branch count
- 4
- Communication rate
- 300–921600 bps
- Communication distance
- 1200 m
- Operating mode
- Asynchronous half-duplex (RS485)
- Device capacity
- Up to 32 RS485 devices per group
- Software compatibility
- Applicable to serial communication software; plug and play
Protection and Power
- Photoelectric isolation
- 2500Vrms per port
- RS485 surge protection
- 600W per line
- ESD protection
- ±15kV per line
- Power input
- DC 9–38V
Environmental
- Operating temperature
- -20°C to 80°C
- Relative humidity
- 5% to 95%
- Warranty
- 1 year
Related Products
Explore complementary DTECH connectivity products for adjacent signal paths and network requirements.
Frequently Asked Questions
Verified answers for product selection and project planning.
How many RS485 branches does the IOT9024I provide?
It provides four independently operating RS485 groups.
What is the supported communication rate?
The source specification lists a range of 300 to 921600 bps.
How many devices can connect to each branch?
Each group can connect up to 32 RS485 devices.
What isolation and protection are provided?
Each port is specified with 2500Vrms photoelectric isolation. The RS485 lines also include 600W surge and ±15kV ESD protection.
Need Help Selecting the Right Product?
Share your device interfaces, network environment and project requirements with the DTECH industrial communication team.