The Ebyte E95-DTU(900SL30-232) is an industrial Sub-GHz LoRa wireless data transceiver operating at 850.125-930.125MHz with 30dBm (1W) output power, delivering 10km long-range telemetry over transparent RS232 serial interface. Built with DIN-rail plastic enclosure and 8-28V DC wide voltage input, it provides strong anti-interference performance for industrial IoT networks.
| Technical Parameter | E95-DTU(900SL30-232) Specification | Remarks / Details |
|---|---|---|
| Product Model | E95-DTU(900SL30-232) | Industrial LoRa Wireless Data Modem |
| Modulation Technology | LoRa Spread Spectrum | Military-grade long-range anti-interference modulation |
| Operating Frequency Band | 850.125 MHz to 930.125 MHz | Default 868.125 MHz (Sub-GHz ISM band) |
| Transmitting Power | 30 dBm (approx. 1 Watt) | High-power RF output for deep penetration |
| Communication Distance | 10 km | Line-of-sight test in open outdoor environment |
| Serial Interface | RS232 Transparent Transmission | Standard serial port for industrial controllers/PLCs |
| Operating Voltage Input | DC 8 V to 28 V | Supports standard 12V / 24V industrial power supply |
| Installation & Housing | DIN-Rail Mount / Flame-Retardant Plastic Shell | Standard 35mm guide rail cabinet mounting |
| Product Dimensions | 92 x 66 x 30 mm | Compact footprint for electrical enclosure integration |
| serial number | project | Specification | illustrate |
| 1 | Product size | 92*66*30 mm | See installation dimensions for details |
| 2 | Product weight | 95g | Weight tolerance 5g |
| 3 | working temperature | -40℃～+85℃ | Meet industrial grade use requirements |
| 4 | voltage range |
DC 8～28V |
DC version is recommended to use 12V or 24V |
| 5 | Communication interface | RS232 | RS232 |
| 6 | baud rate | Factory default 9600 | Baud rate range 1200~115200 |
| 7 | Address code | Factory default 0 | A total of 65536 address codes can be set |
Frequency range and number of channels
| Model specifications | default frequency | Frequency band range | channel spacing | Number of channels |
| Hz | Hz | Hz | ||
| E95-DTU(900SL 30-232 ) | 868.125M | 850.125~930.125M | 1M | 81, half duplex |
Note: When using multiple groups of digital radio stations to communicate one-to-one at the same time in the same area, it is recommended that each group of digital radio stations set a channel spacing of more than 2MHz.
Transmit power level
| Model specifications | 30dBm | 27dBm | 24dBm | 21dBm |
| E95-DTU(900SL30-232) | Factory default | √ | √ |
√ |
Note: The lower the transmit power, the closer the transmission distance, but the operating current will not decrease in the same proportion. It is recommended to use the maximum transmit power.
Air speed class
| Model specifications | Default air rate bps | Number of levels kbps | Air speed class |
| E95-DTU(900SL30-232) | 2.4k | 6 | 2.4, 4.8, 9.6, 19.2, 38.4, 62.5 |
Note: The higher the air speed setting, the faster the transmission rate and the shorter the transmission distance; therefore, when the speed meets the usage requirements, it is recommended that the lower the air speed, the better.
Current parameters
| Model specifications | Emission current mA | Receive current mA | Sleep current mA |
| 12V | 12V | 12V | |
| E95-DTU(900SL30-232) | 158.4 | 15.8 | 7.73 |
Note: It is recommended to keep more than 50% current margin when selecting the power supply, which is beneficial to the long-term and stable operation of the radio.
Practical Application Scenarios
1. Long-Distance Oil and Gas Pipeline Pressure Telemetry
In remote pipeline monitoring where cellular infrastructure is unavailable or costly, field RTUs and pressure transmitters require high-reliability long-range connectivity. The E95-DTU(900SL30-232) utilizes its 30dBm (1W) transmit power and LoRa spread spectrum modulation to span up to 10km across harsh terrain. Interfacing directly with field flowmeters via transparent RS232 and transmitting back to an Ebyte Ethernet Gateway connected to the central SCADA system, it delivers continuous Modbus telemetry without monthly SIM card fees.
2. Environmental and Meteorological Remote Data Collection
Hydrological stations and mountain weather sensors operating off-grid require resilient communications resistant to severe atmospheric attenuation. Installed on 35mm DIN rails inside solar-powered NEMA enclosures, the E95-DTU(900SL30-232) accepts wide DC 8-28V power directly from battery banks. It transmits RS232 weather metrics over Sub-GHz 868MHz/915MHz bands to an Ebyte Serial Server at the base station, leveraging LoRa anti-interference technology to maintain solid wireless link quality during heavy rainfall or snow.
3. Smart Factory CNC Machine and Legacy Serial Device Centralization
In large manufacturing facilities, legacy CNC machine tools and automated PLCs equipped with RS232 interfaces need to upload operational metrics to MES software without laying expensive underground conduit cabling. The E95-DTU(900SL30-232) mounts in control cabinets using its compact plastic DIN-rail housing (926630mm). It wirelessly bridges RS232 traffic across the 850.125-930.125MHz spectrum to a central master DTU, ignoring heavy motor EMI noise and eliminating physical bus wiring across production floors.
FAQ Section
1. What are the core advantages of 30dBm transmit power and Sub-GHz LoRa modulation in the E95-DTU(900SL30-232)?
The 30dBm (1W) output power combined with military-grade LoRa spread spectrum technology gives the E95-DTU(900SL30-232) exceptional link budget headroom. Operating in the 850.125MHz to 930.125MHz Sub-GHz band, it achieves line-of-sight transmission up to 10km while offering superior obstacle penetration and multipath interference immunity compared to standard 2.4GHz wireless systems.
2. How is the RS232 interface configured for transparent serial transmission?
The RS232 interface operates in full transparent transmission mode, meaning the DTU acts as a virtual wireless serial cable. Any raw data frame—including Modbus RTU, ASCII, or custom binary protocols—received on the RS232 port is modulated onto the RF carrier without data alteration or protocol conversion overhead, enabling seamless plug-and-play operation with existing PLCs, RTUs, and serial meters.
3. What electrical protection and installation features are provided for harsh industrial environments?
The modem features a durable plastic shell with an integrated 35mm DIN-rail mounting clip for fast cabinet installation. It supports a flexible DC 8V to 28V wide voltage power supply, making it directly compatible with standard 12V or 24V DC industrial power rails and solar battery banks, while protecting against voltage fluctuations in field deployments.
