Industrial Wireless Made Reliable
Full-Duplex 2.4GHz Industrial Wireless DTU for RS-232 & RS-485 Systems
Replace complex wiring with stable, long-range wireless communication built for industrial environments.
Built for Continuous Industrial Operation
In automation systems, communication failure is not an option.
The E90-DTU2G4HD12 is engineered for stable, real-time wireless data transmission between serial devices. Designed for factories, utilities, energy systems, and infrastructure projects, it ensures uninterrupted communication in electrically noisy and environmentally harsh conditions.
With advanced error correction, automatic frequency hopping, and industrial-grade components, this DTU delivers consistent performance 24/7.
Up to 800m range · Full duplex · Industrial-grade protection · Wide voltage input

High-Speed Full-Duplex Wireless Performance
Unlike half-duplex solutions that introduce transmission delays, the E90-DTU(2G4HD12) supports simultaneous bidirectional communication, enabling:
- Real-time data exchange
- Faster control response
- Reduced latency in automation systems
- Seamless PLC-to-PLC communication
Operating in the global 2.4–2.48GHz ISM band, it provides license-free deployment worldwide.
Transmission Power: 12 dBm
Communication Distance: Up to 800 meters (open environment)
Baud Rate: 1200 bps – 921600 bps (default 115200 bps)
Flexible Serial Integration
Designed to integrate directly into existing industrial systems:
RS-232 (DB9 Interface)
Connect PCs, industrial controllers, legacy systems, and embedded devices.
RS-485 Terminal Interface
Ideal for Modbus networks, PLC systems, SCADA applications, and multi-node industrial buses.
Dual interface support reduces hardware complexity and simplifies deployment.
Designed for Harsh Environments
Industrial sites demand more than basic wireless hardware.
The E90-DTU(2G4HD12) features:
- Industrial-grade metal enclosure
- Three-proof coating (moisture, mildew, salt spray protection)
- Wide voltage input: 8–28V DC
- Operating temperature: –40°C to +85°C
- Strong anti-interference capability
- External SMA antenna for optimized signal strength
It performs reliably in high humidity, dusty workshops, outdoor cabinets, and electrically noisy environments.
Stable & Secure Data Transmission
Advanced built-in technologies ensure data integrity:
- Forward Error Correction (FEC)
- CRC error detection
- Automatic frequency hopping
- Hardware watchdog protection
These features minimize packet loss and enhance communication stability, even in crowded RF environments.
Compact, Efficient, Easy to Deploy
- Size: 82 × 62 × 25 mm
- Weight: ~130g
- LED indicators for real-time status monitoring
- DIP switches for configuration
- Low power consumption for continuous operation
The compact form factor allows easy installation in control cabinets, monitoring boxes, and remote field equipment.
Typical Applications
The E90-DTU(2G4HD12) is widely deployed in:
- Industrial automation systems
- PLC wireless communication
- Remote monitoring stations
- Energy management systems
- Water treatment facilities
- Environmental monitoring
- Smart agriculture systems
- SCADA and telemetry networks
Wherever reliable serial communication is required without the limitations of physical wiring, this DTU delivers dependable wireless connectivity.
Resources
Product information
Configuration utility
Default settings
| TECHNICAL SPECIFICATIONS |
| Model number |
E90-DTU2G4HD12 |
| Operating system |
Configuration utility for Windows 11 32/64-bit, Windows 10 32/64-bit, Windows 8 32/64-bit |
| Serial interface |
| No. of serial ports |
1 port RS232 DB9
1 port RS485 screw terminals |
| Serial data controls |
- Parity: None, Odd, Even
- Data bits : 5, 6, 7, 8
- Stop bits : 1, 2 |
| Signals |
RS232: TX, RX, GND
RS485: D+, D- |
| Communication mode |
Full-duplex |
| Baud rates |
1200 - 921600 bps |
| Wireless interface |
| Transmit power |
max 12 dBm |
| Range |
800 m (2600 Ft.) |
| Multi-Channel Support |
80 selectable channels,
1 MHz channel spacing |
| Frequency |
2.4 - 2.48GHz |
| Misc. |
| Parameter management |
Software utility |
| Power |
8 - 28VDC screw terminals |
| Operating Temp. |
-40°C to 85°C |
| Antenna |
di-pole antenna, SMA male (inside threads / center pin) |
| Size |
82 x 62 x 25 mm |
| Weight |
130g |
| Approvals |
CE, FCC, ROHS |
| Warranty |
1 year Limited Warranty |