The Ebyte E90-DTU(400SL22)E is a high-performance industrial LoRa wireless Ethernet gateway designed for long-range data transmission up to 5km, supporting 10/100M Ethernet connectivity, Modbus communication, and versatile industrial protocols including TCP/UDP, HTTP Client, and MQTT Client for seamless IoT cloud integration.
| Parameter | Specification |
|---|---|
| Interface Type | Ethernet (10/100M) |
| Frequency Band | 400 MHz |
| Transmit Power | 22 dBm |
| Communication Distance | 5 km |
| Working Modes | TCP Server/Client, UDP Server/Client, HTTP/MQTT Client |
| Dimensions | 84 x 82 x 25 mm |
| Serial No. | Item | Specifications |
| 1 | voltage | DC8~28V, 12V or 24V power supply recommended |
| 2 | Network port specifications | Standard RJ45, supports 10/100Mbps |
| 3 | Network protocol | IP, TCP/UDP, ARP, ICMP, IPv4, MQTT, HTTP |
| 4 | Socket number | 2-way full function |
| 5 | Socket mode | TCP Server, TCP Client, UDP Server, UDP Client, HTTP Client, MQTT Client |
| 6 | TCP Server connection | Supports up to 5 TCP connections |
| 7 | IP acquisition method | Static IP, DHCP |
| 8 | DNS | support |
| 9 | domain name server | Customizable, default 114.114.114.114 |
| 10 | User configuration | Web page configuration, host computer, AT command |
| 11 | Antenna interface | SMA (external thread, internal hole) |
| 12 | Operating temperature | -40 ~ +85℃, industrial grade |
| 13 | Working humidity | 10% ~ 90%, relative humidity, no condensation |
| 14 | Size | 84mm×82mm×25mm |
| 15 | Average weight | 130±5g |
| 16 | Storage temperature | -40～+125℃, industrial grade |
Frequency range and number of channels
| Model specifications | Factory default frequency MHz | Frequency band range MHz | Channel spacing Hz | Number of channels |
| E90-DTU(230SL30)E | 230.125 | 220.125～236.125 | 250K | 0~64 (default 40) half duplex |
| E90-DTU(400SL22)E | 433.125 | 410.125～493.125 | 1M | 0~83 (default 23) half duplex |
| E90-DTU(400SL30)E | ||||
| E90-DTU(900SL22)E | 868.125 | 850.125～930.125 | 1M | 0～80 (default 18) half duplex |
| E90-DTU(900SL30)E |
[Note]: When using multiple groups of digital transmission radio stations to communicate one-to-one at the same time in the same area, it is recommended that each group of digital transmission radio stations set a channel spacing of more than 3MHz.
| Model Specifications | Airspeed Range | Default Parameters |
| E90-DTU(230SL30)E | 2.4、4.8、9.6、15.6Kbps | 2.4Kbps |
| E90-DTU(400SL22)E | 2.4、4.8、9.6、19.2、38.4、62.5Kbps | 2.4Kbps |
| E90-DTU(400SL30)E | ||
| E90-DTU(900SL22)E | 2.4、4.8、9.6、19.2、38.4、62.5 Kbps | 2.4Kbps |
| E90-DTU(900SL30)E |
Communication distance
| Model Specifications | Distance | Remarks |
| E90-DTU(230SL30)E | 10KM | Sunny and open environment, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4Kbps |
| E90-DTU(400SL22)E | 5KM | Sunny and open environment, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4Kbps |
| E90-DTU(400SL30)E | 10KM | Sunny and open environment, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4Kbps |
| E90-DTU(900SL22)E | 5KM | Sunny and open environment, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4Kbps |
| E90-DTU(900SL30)E | 10KM | Sunny and open environment, antenna gain 5dBi, antenna height 2.5 meters, air rate 2.4Kbps |
Practical Application Scenarios
1. Smart Grid Remote Telemetry
In power distribution networks, monitoring transformers and distribution cabinets across vast rural areas is a challenge. This gateway acts as a bridge between remote Modbus-based sensors and a centralized control center. Its 5km range ensures that telemetry data is reliably transmitted via Ethernet to the utility's cloud-based monitoring platform without the need for trenching expensive fiber cables.
2. Automated Industrial Facility Monitoring
Modern factory floors require real-time data from disparate subsystems like HVAC, conveyor belts, and assembly robots. By deploying these gateways, facility managers can create a unified Ethernet-based network. The support for MQTT and HTTP protocols allows these industrial assets to feed data directly into enterprise IoT dashboards, enabling predictive maintenance and energy consumption optimization.
3. Large-Scale Agricultural Irrigation Control
Large-scale farming operations utilize distributed soil sensors and valve controllers. This LoRa gateway allows farmers to integrate their localized wireless sensor network into an Ethernet-backbone network. The device effectively manages complex scheduling and automatic polling of distributed irrigation nodes, ensuring efficient water distribution across thousands of acres.
FAQ Section
1. Does this gateway support simultaneous connection to multiple clients?
Yes. In TCP Server mode, the gateway is designed to support up to six-way client connections. This allows multiple host devices, such as local HMI panels and remote cloud servers, to access data from the same wireless node network concurrently.
2. How does the Ethernet interface improve integration compared to traditional RS485-only DTUs?
The Ethernet interface enables direct connectivity to local area networks (LANs) and switches, significantly reducing the complexity of physical wiring. It allows the device to communicate over existing IT infrastructure, supporting standard TCP/IP networking, which is essential for modern IIoT (Industrial IoT) architectures that prioritize scalability and cloud compatibility.
3. Is the device compatible with standard Modbus RTU/TCP protocols?
Yes. It is natively designed to handle Modbus communication, ensuring full compatibility with standard industrial PLCs and sensors. This makes it an ideal drop-in replacement for updating legacy serial-based systems to modern Ethernet-based remote monitoring configurations.
