EBYTE proudly launches the EWD95M Series Micro Wireless Data Radios, offering tailored solutions for IoT, smart homes, industrial automation, environmental monitoring, and building automation. Featuring transparent RS485/RS232 interfaces, compact plastic housing, and DIN-rail mounting, these radios deliver seamless integration and industrial-grade reliability.
What is a Micro DIN-Rail DTU?
A Micro DIN-Rail Data Transmission Unit (DTU) is a compact, industrial-grade communication device designed for DIN rail mounting, serving as a critical bridge between field devices (sensors, PLCs, meters) and centralized control systems or cloud platforms. Combining wireless connectivity, protocol conversion, and edge computing capabilities, it enables reliable data transmission in harsh industrial environments.
With a minimized footprint of 80×28×27mm and a lightweight design (32±2g), it integrates advanced wireless communication (e.g., LoRa, FSK), multi-protocol conversion, and edge processing capabilities. Featuring 5–28V DC wide voltage input and IP30-rated engineering plastic housing, it operates reliably in extreme conditions (-40°C to +85°C), making it a cornerstone of Industrial IoT (IIoT) infrastructure.
LoRa Data Transmission Radio
EWD95M-400SLxx(xxx) adopts military-grade LoRa modulation technology and offers various transmission modes. It operates in the frequency range of 410.125MHz – 493.125MHz (default 433.125MHz), providing transparent RS485/RS232 interfaces, a plastic housing, and rail-mounted installation. It supports 5–28V DC wide voltage input. The LoRa spreading technology enables longer communication distances and stronger anti-interference capabilities.
It supports multi-level relay networking, effectively extending communication distances and enabling ultra-long-range communication. The LBT (Listen Before Talk) function allows the device to automatically wait for the optimal time to transmit based on environmental noise intensity, greatly enhancing communication success rates in harsh conditions
LoRaWAN Node Data Transmission Radio
EWD95M-400LNxx(xxx) is based on the standard LoRaWAN protocol and can connect with standard LoRaWAN networks. It comes preloaded with LoRaWAN firmware and operates in the frequency range of 410~510MHz. EWD95M-900LNxx(xxx) operates in the 850~930MHz range. It supports LoRaWAN 1.0.3 EU433/CN470 and LoRaWAN 1.0.4 EU868, US915, AU915, AS923, IN865, KR920, RU864 standards and supports CLASS-A/CLASS-C node types, with both ABP/OTAA network access methods
LoRa Mesh Network Data Transmission Radio
EWD95M-400NWxx(xxx) uses a new LoRa Mesh networking technology. It features decentralized, self-routing, network self-healing, and multi-level routing capabilities. The device is compact, has plastic housing, and rail-mounted installation.
The radio uses a decentralized structure where the network consists of routing nodes and terminal nodes. There is no need for a central node or coordinator to manage the network, making it simple and quick to set up
GFSK Modulation Data Transmission Radio
EWD95M-433GFxx(xxx) utilizes GFSK modulation technology and offers various transmission modes. It operates in the 410MHz – 450MHz range (default 433MHz). GFSK modulation allows for more data transmission within limited frequency resources.
The radio supports functions like remote wake-up, wireless configuration, relay networking, and communication keys. It also provides data encryption through advanced encryption and decryption algorithms, ensuring secure data transmission and enhancing reliability
Domestic LoRa Data Transmission Radio
EWD95M-400GLxx(xxx) is based on Ebyte's E290-T series UART module and utilizes ChirpIoT™ spread spectrum technology. It operates in the 410.125MHz – 493.125MHz frequency range (default 433.125MHz).
The radio employs ChirpIoT™ spread spectrum technology, offering half-duplex wireless communication with high anti-interference and sensitivity. It also supports features like remote wake-up, wireless configuration, automatic relay, communication keys, AT commands, and IAP upgrades. The radio supports adjustable packet lengths
High-speed Continuous Transmission Data Radio
EWD95M-433Cxx(xxx) is based on Ebyte's E610-T series high-speed continuous transmission wireless module, working in the 410MHz – 441MHz frequency range (default 433MHz). It provides transparent RS485/RS232 interfaces, a plastic housing, and rail-mounted installation. It supports 5–28V DC wide voltage input.
In continuous transmission mode, the device can perform continuous data transmission at different serial port baud rates with low data output delay, making it suitable for scenarios that require fast transmission of large data volumes
Wireless Narrowband Data Transmission Radio
EWD95M-433Nxx(xxx) is based on Ebyte's E30-T series UART module, offering half-duplex, transceiver integration, and transparent transmission. It operates in the 425MHz – 450.5MHz frequency range (default 433MHz), with a plastic housing and rail-mounted installation.
This device features a software FEC (Forward Error Correction) algorithm, offering high coding efficiency and strong error correction capabilities, greatly improving reliability and transmission range in the presence of interference
Automatic Frequency Hopping Data Transmission Radio
EWD95M-2G4Hxx(xxx) is based on Ebyte's E34-T series UART module, operating in the 2.4GHz – 2.518GHz frequency range (default 2.4GHz). This device features an automatic frequency hopping function, offering strong anti-interference, high transmission speed, and low latency.
The frequency hopping technology enhances communication security and anti-jamming capabilities. Compared to fixed-frequency communication, frequency-hopping communication is more covert and harder to intercept, maintaining stable communication even when some frequencies are disturbed
Product Features
Compact Size: Made with flame-retardant plastic housing and a rail-mounted installation structure for easy and efficient installation.
Hidden Button Design: The hidden buttons for switching working modes help prevent accidental triggers, ensuring more reliable operation.
Efficient Power Design: Supports power adapter or wire-in connections.
Wide Operating Temperature: -40°C to +85°C, suitable for harsh working environments, truly an industrial-grade product.
Modbus Protocol: Supports Modbus protocol transmission.
Multiple Protection Functions: Includes power reverse polarity protection, overcurrent protection, antenna surge protection, etc., enhancing the radio’s reliability.
Isolated Communication Ports and Power Interfaces: Provides high protection for reliable communication.
Advanced Software Functions: All parameters are programmable, including power, frequency, air rate, and address ID.
Built-in Watchdog: Ensures automatic restart and continued operation with pre-configured parameters in case of abnormalities.
Key Specifications
Applications of Micro DIN-Rail DTUs
Smart Grid Monitoring
Deploy SL Series DTUs to transmit real-time power quality data (e.g., voltage harmonics, phase imbalance) from distribution cabinets to SCADA systems, achieving fault isolation within <3 ms.
Agricultural IoT Networks
Utilize SL Series in LoRaWAN-based farmland networks to monitor soil moisture (0–100 kPa range) and microclimate data, optimizing irrigation with 90% water efficiency.
Industrial Automation
N Series DTUs connect CNC machines and robotic arms via RS485, enabling real-time OEE tracking with <0.1% packet loss in high-noise factories.
Urban Environmental Sensing
SL Series DTUs form self-healing mesh networks for air quality monitoring (PM2.5/CO2), penetrating concrete structures in smart city deployments.
Renewable Energy Systems
Hybrid deployment: SL Series for long-distance solar panel diagnostics, N Series for localized inverter control, cutting maintenance costs by 40%.
Why Choose Micro DIN-Rail DTUs?
Space Optimization: 18 units per meter of DIN rail (vs. 6 for conventional models).
Protocol Agnosticism: Native support for MQTT, HTTP, and custom TCP/UDP APIs for seamless cloud integration.
End-to-End Security: AES-128 encryption and TLS 1.3 ensure data integrity in OT/IT converged networks.
For technical documentation:
EWD95M-400SL22 Manual
