E90-DTU (900SL22) Industrial-Grade LoRa Wireless Data Radio
A rugged long-range wireless modem leveraging military-grade LoRa modulation technology for reliable data transmission in challenging environments.
Core Product Features
Advanced LoRa Modulation Technology
Utilizes direct-sequence spread spectrum (DSSS) LoRa technology with 160mW (22dBm) transmit power for extended communication range and superior anti-interference capabilities in industrial settings.
Robust Interface Support
Provides transparent RS232/RS485 interfaces for seamless integration with PLCs, RTUs, sensors (rain gauges, level meters), and industrial control systems.
Enhanced Data Reliability
Implements Forward Error Correction (FEC) algorithms to automatically correct corrupted data packets during transmission failures, significantly improving reliability in noisy environments.
Secure Communications
Features AES-128 level data encryption with randomized packet structures to prevent data interception and ensure transmission security.
Technical Specifications
RF Performance
- Frequency Range: 850.125–930.125MHz (Default: 868.125MHz)
- Transmit Power: 160mW (22dBm) configurable
- Air Data Rate: 2.4kbps (Factory Default)
- Sensitivity: -138dBm @ 0.3kbps
Physical & Electrical
- Power Supply: 8–28V DC (12V/24V Recommended)
- Interfaces: RS232 (DB-9), RS485 (Terminal Blocks)
- Dimensions: 82 × 50 × 22mm
- Operating Temp: -40°C to +85°C
Protocol & Security
- Encryption: AES-128 with randomized payload
- Packet Control: Configurable packet length and segmentation
- Channel Capacity: 81 semi-duplex channels
Industrial Applications
Long-Range Monitoring Systems
Ideal for environmental monitoring stations, water management systems (rain gauges, level sensors), and agricultural telemetry where wired connectivity is impractical.
Industrial Automation
Deployed in PLC/SCADA networks across manufacturing plants, mining operations, and oil/gas facilities requiring noise-immune communication in electromagnetically harsh environments.
Infrastructure Networks
Enables reliable data backhaul for dispersed assets like remote substations, pipeline monitoring points, and railway signaling systems across 5km+ distances.
Critical Environment Deployment
Operates in extreme conditions including high-interference zones, temperature extremes (-40°C to +85°C), and geographically complex terrain.
| RF Parameter | Value | Remark | |
|---|---|---|---|
| Working frequency | 850.125~930.125 MHz | Default: 868.125MHz | |
| Transmitting power | 22 dBm | About 160mW | |
| Air data rate | 0.3k~62.5kbps | Default: 2.4kbps | |
| Test distance | 5000 meter | - |
| Hardware Parameter | Value | Remark | |
|---|---|---|---|
| Size | 82 * 62 * 25 mm | Without SMA-K | |
| Antenna type | SMA-K | - | |
| Communication interface | RS232 / RS485 | Standard DB9 Hole / 3.81 connecting terminal | |
| Channel numbers | 81 | Half duplex | |
| Buffer | 1000 bytes | Can be sub-packed to 32/64/128/240 byte each time via command |
| Electronic parameter | Min. | Typ. | Max. | Unit | Condition |
|---|---|---|---|---|---|
| Power supply | 8 | 12 | 28 | V | It is recommended to use 12V or 24V |
| Transmitting current | - | 45 | - | mA | 22dBm（160mW） |
| Stand-by current | - | 10 | - | mA | - |
| Operating temperature | -40 | 20 | +85 | ℃ | - |
| Operating humidity | 10 | 60 | 90 | % | - |
| Storage temperature | -40 | 20 | +125 | ℃ | - |
