E95-DTU(400SL30-232) is a wireless data transmission DTU that uses military-grade LoRa modulation technology. It has a variety of transmission methods. It works at (410/441M) frequency band (default 433MHz). The DTU provides a transparent RS232 interface, plastic shell. rail type installation structure, support 8~28V voltage input.
| Parameter Item | E95-DTU(400SL30-232) Technical Specifications |
|---|---|
| Wireless Modulation Technology | Military-grade LoRa Spread Spectrum (Semtech SX1268 Core) |
| Operating Frequency Range | 410 to 441 MHz (Default factory pre-configured frequency: 433 MHz) |
| Maximum Transmit Power | 20 dBm |
| Reliable Communication Distance | 3000 meters (3 km line-of-sight in open, unobstructed environments) |
| Physical Wired Interface | Standard RS232 Serial Port (DB9 Female Connector / Terminal Block options) |
| RF Antenna Connection Interface | SMA-K (Standard thread, internal hole connector pin) |
| Housing & Mounting Structure | Industrial plastic shell, supports standard DIN-rail type installation |
| Input Voltage Requirement | DC 8 to 28 Volts (Supports wide voltage industrial bus power lines) |
| Physical Dimensions | 92 * 67 * 30 mm |
| Net Product Weight | 95 plus or minus 5 grams |
| Mode |
Working Frequency |
Transmit Power |
Distance | Specifications | Recommended Application Scenarios |
| Hz | dbm | km | |||
| E95-DTU(400SL30-232) | 410/441M | 20 | 3 |
Lora spread spectrum anti-interfernce |
Suitable for small data volume and long-distance application environment |
| 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 |
Antenna impedance |
50Ω |
Standard 50Ω characteristic impedance |
| 5 | Voltage Range | 8～28V DC | Recommend to use 12V or 24V |
| 6 | Interface | RS232 | 3.81 terminal block |
| 7 | Baud Rate | Default 9600 | Baud rate range 1200～115200 |
| 8 | Address Code | Default 0 | A total of 65536 address codes can be set |
| Model |
Defaul tFrequency |
Frequenc yRange |
Channel Spacing |
Number of Channels |
| Hz | Hz | Hz | ||
| E95-DTU(400SL30-232) | 433M | 410～441M |
1M | 32，Half Duplex |
| Model | Transmitting Current mA | Waiting Current mA | ||
| 12V | 24V | 12V | 24V | |
| E95-DTU(400SL30-232) | 230 | 135 | 20 | 12 |
Practical Application Scenarios
1. Factory Automation Legacy PLC Wireless Networking
In brownfield industrial automation environments, legacy Programmable Logic Controllers (PLCs) rely heavily on wired RS232 connections for data communication. Laying communication cables across a busy shop floor introduces high costs and complex physical barriers. By installing the E95-DTU(400SL30-232) onto standard DIN-rails inside control cabinets, engineers can establish a transparent serial bridge. The module seamlessly converts RS232 data packets into LoRa signals, establishing stable wireless communication with the central SCADA terminal.
2. Remote Water Pump and Flow Meter Telemetry
Municipal water infrastructure and wastewater treatment plants often feature distributed pump stations spread across municipal zones. Connecting these sites to a central monitoring office using cellular networks incurs recurring data subscription fees and runs into reception blind spots. Deploying the E95-DTU(400SL30-232) creates a dedicated private Sub-GHz network. Operating at 433MHz with a 3km open range, the unit transmits Modbus telemetry from flow meters and liquid level sensors directly back to management rooms without regular operating costs.
3. Smart Warehouse Automated Material Handling
Modern fulfillment centers utilize automated material systems where control nodes manage stationary conveyors and lifters. These modules require constant communication to optimize throughput, but physical wiring limits flexibility. The compact, rail-mounted plastic enclosure of this DTU fits neatly inside modular electrical boxes. It facilitates high-uptime, low-latency transparent transmissions over the 410 to 441MHz band, allowing supervisors to monitor distributed machinery health metrics smoothly.
H2: FAQ Section
1. Does the E95-DTU(400SL30-232) support standard Modbus RTU industrial protocols?
Yes, the E95-DTU(400SL30-232) provides a fully transparent data transmission layer at the physical serial port interface. This means it does not modify user data packets during transmission, making it natively compatible with Modbus RTU, customized serial bytes, and other common industrial communication protocols used by PLCs and RTUs.
2. How does the DIN-rail installation mechanism benefit field installation engineers?
The housing features an integrated rail-type installation design that fits standard industrial DIN-rails. This removes the need for custom mounting plates or manual screw tracking, allowing field technicians to snap the module directly onto standard control rack rails alongside terminal blocks and circuit breakers to save installation time.
3. What are the key power supply requirements for deploying this DTU in industrial control cabinets?
The module features a wide voltage tracking architecture that accepts input levels from DC 8 to 28 Volts. This range allows it to utilize common 12V DC or 24V DC industrial power distribution buses natively, eliminating the need for dedicated external voltage step-down converters.
4. Can this unit communicate smoothly in locations with high concrete walls and metal interference?
Yes, because it uses Sub-GHz LoRa modulation technology based on the SX1268 chipset rather than standard 2.4GHz Wi-Fi, it has a significant advantage in signal diffraction and penetration. The 433MHz operating frequency easily bypasses thick concrete barriers and metal frames common in warehouses and factories, ensuring data stability over a 3km line-of-sight range.
