Ebyte E95-DTU(400F30-485) is an economical DIN-rail LoRa wireless serial modem covering 410-510MHz frequency band with factory default 433MHz. It supports transparent RS485 Modbus RTU data transmission with 30dBm 1W high transmit power, achieving 1km stable communication under open line-of-sight environment, and supports wide DC 8V to 28V industrial power supply.
| Parameter Item | E95-DTU(400F30-485) Technical Specifications |
|---|---|
| Wireless Technology | LoRa Spread Spectrum / GFSK Modulation |
| Operating Frequency Range | 410 to 510 MHz (Default pre-configured frequency: 433 MHz) |
| Transmit Power | 30 dBm (Approximately 1 Watt peak power) |
| Wireless Range | 1000 meters (1 km line-of-sight in open, clear outdoor environments) |
| Wired Interface | Standard RS485 (Terminal block for A/B line wiring) |
| Wired Protocols Supported | Transparent serial transmission, natively compatible with Modbus RTU |
| Operating Voltage | DC 8 to 28 Volts (Standard industrial power input compatibility) |
| Housing Material | Flame-retardant industrial plastic enclosure |
| Mounting Option | Standard DIN-rail mounting backplate integration |
| Physical Dimensions | 92 * 67 * 30 mm |
| Net Product Weight | 95 plus or minus 5 grams |
| Model | Transmitting Current mA | Waiting Current mA | ||
| 12V | 24V | 12V | 24V | |
| E95-DTU(400F30-485) | 45 | 26 | 10 | 7 |
| Mode |
Working Frequency |
Transmit Power | Distance | Specifications | Recommended Application Scenarios |
|---|---|---|---|---|---|
| hz | dbm | km | |||
| E95-DTU(400F30-485) | 410～510M |
30 | 1 | Cost-effective |
Suitable for short distance, stable high-speed transmission |
| No. | Term | Specification | Description |
|---|---|---|---|
| 1 | Size | 92*67*30 mm | Review installation dimensions for details |
| 2 | Weight | 95g | Weight tolerance 5g |
| 3 | Working Temperature | -40℃～+85℃ | Meet the needs of industrial use |
| 4 | Voltage Range | 8～28V DC | Recommend to use 12V or 24V |
| 5 | Interface | RS485 | 3.81 terminal block |
| 6 | Baud Rate | Default 9600 | Baud rate range 1200～115200 |
| 7 | Address Code | Default 0 | A total of 65536 address codes can be set |
| Model | Default Frequency Hz | Frequency Range Hz | Channel Spacing | Number of Channels |
|---|---|---|---|---|
| E95-DTU(400F30-485) | 433M | 410～510M | 0.5M | 200，Half Duplex |
Practical Application Scenarios
1. Legacy PLC Modbus RTU Wireless Bridge
In factory automation layouts, extending physical cables to legacy Programmable Logic Controllers (PLCs) located across production bays is expensive and logistically challenging. Installing the E95-DTU(400F30-485) on the standard DIN-rail inside local control cabinets offers a reliable solution. By connecting directly to the RS485 terminal of the PLC, the DTU transparently transmits Modbus RTU telemetry packets over 433MHz to the master controller, eliminating cable infrastructure costs.
2. Distributed Solar Photovoltaic (PV) Array Monitoring
Solar power farms feature arrays of PV string inverters spread across vast field zones. Each inverter reports real-time generation metrics via serial connections. Deploying the E95-DTU(400F30-485) at each inverter station allows operators to establish a robust private wireless network. Operating at 30dBm, it easily overcomes steel frame obstructions, gathering telemetry over a 1km range and passing it directly to the central SCADA host.
3. Remote Municipal Water Meter and Pump Station Control
Municipal water distribution lines depend on remote flow meters and motorized pump valves to manage flow. Laying physical wires through paved public roads is impractical. Integrating the E95-DTU(400F30-485) into these water stations allows for steady wireless data transfers. The unit operates from standard DC 8 to 28V utility power lines, delivering real-time flow monitoring and remote valve controls to the municipal facility without ongoing cellular subscription fees.
FAQ Section
1. Does the E95-DTU(400F30-485) support standard Modbus RTU industrial protocol frames?
Yes, the E95-DTU(400F30-485) supports fully transparent serial transmission over its physical RS485 interface. It does not parse or modify the packet structure, meaning it is natively compatible with standard Modbus RTU commands, custom register structures, and arbitrary serial byte strings used by industrial automation hardware.
2. What are the electrical power requirements to drive this 30dBm DTU safely?
The DTU is designed with a wide-voltage tracking system that accepts standard DC 8 to 28 Volts. This matches common 12V DC or 24V DC industrial power rails, allowing you to run the device directly from existing cabinet power supplies without needing separate voltage step-down converters.
3. How do I physically install the E95-DTU(400F30-485) inside standard electrical cabinets?
The module features a durable plastic enclosure integrated with a standardized DIN-rail back-clip. It snaps directly onto standard 35mm DIN-rails alongside standard industrial breakers, terminal blocks, and relay sockets without requiring mounting plates or custom screw templates.
4. What is the maximum line-of-sight communication range of this 1 Watt modem?
Under standard testing conditions in an open, unobstructed outdoor environment using standard high-gain antennas, the 30dBm (1 Watt) output power of the E95-DTU(400F30-485) provides a highly reliable wireless data transmission range of up to 1 km.
