| Technical Parameter | EWD95M-400SL22(485) Specification | Remarks / Details |
|---|---|---|
| Product Model | EWD95M-400SL22(485) | Miniature DIN-Rail Wireless Modem |
| Modulation Technology | LoRa Spread Spectrum / GFSK | High anti-interference capability |
| Operating Frequency Band | 410.125 MHz to 493.125 MHz | Default 433.125 MHz (Sub-1GHz ISM band) |
| Transmitting Power | 22 dBm (approx. 160 mW) | Configurable via software command |
| Communication Distance | 5 km | Line-of-sight test in open field |
| Serial Data Interface | RS485 / RS232 Transparent Transmission | Standard industrial screw terminals |
| Operating Voltage | 8 V to 28 V DC | Industrial wide-voltage power support |
| Installation Structure | Standard DIN-Rail Mount / Plastic Shell | Compact 35mm guide rail installation |
| Dimensions & Weight | 80 x 28 x 27 mm / 32 plus/minus 2 grams | Ultra-lightweight and space-saving enclosure |
| Serial number | project | Specification | illustrate |
| 1 | Product size | 80*28*27 mm | See Installation Size for details |
| 2 | Product weight | 32 g | Weight tolerance 2g |
| 3 | Operating temperature | -40℃～+85℃ | Industrial grade |
| 4 | Voltage range | 8～28V（DC） | The DC version is recommended to use 12V or 24V |
| 5 | Communication interface | RS485/RS232 | RS485 and Choose one of RS232 , and the actual product identification shall prevail. |
| 6 | Baud rate | Factory default 9600 | Baud rate range 1200~115200 |
| 7 | Address code | Factory default 0 | A total of 65,536 address codes can be set |
| Model specifications | Operating frequency | Transmission power | Reference distance | Air speed | Technical Features |
| Hz | dBm | km | bps | ||
| EWD95M-400SL22(485) | 410.125～493.125M | twenty two | 5 | 2.4k ~ 62.5k | The new generation of LoRa spread spectrum technology |
| EWD95M-400SL22(232) | |||||
| EWD95M-433GF20(485) | 410～450M | 20 | 3.5 | 2.4～500k | GFSK modulation technology |
| EWD95M-433GF20(232) | |||||
| EWD95M-433N20 (485) | 425 ～ 450.5m | 20 | 2.5 | 1 ~ 25k | Wireless narrowband technology |
| EWD95M-433N20 (232) | |||||
| EWD95M-400GL20(485) | 410.125～493.125M | 20 | 5 | 2.4 ~ 62.5k | ChirpIoT spread spectrum technology |
| EWD95M-400GL20(232) | |||||
| EWD95M-433C20(485) | 410～441M | 20 | 6 | 0.5 ~ 470k | High-speed continuous transmission technology |
| EWD95M-433C20(232) | |||||
| EWD95M-2G4H20 (485) | 2.4 ～ 2,518g | 20 | 2.5 | 250k ～ 2M | Automatic frequency hopping technology |
| EWD95M-2G4H20 (232) | |||||
| EWD95M-2G4H27 (485) | 2.4 ～ 2,518g | 27 | 5 | 250k ～ 2M | Automatic frequency hopping technology |
| EWD95M-2G4H27 (232) | |||||
| EWD95M-400LN22 (485) | 410～510M | twenty two | 5.6 | / | LORAWAN protocol |
| EWD95M-400LN22 (232) | |||||
| EWD95M-900LN22 (485) | 850 ～ 930m | twenty two | 5.6 | / | LORAWAN protocol |
Practical Application Scenarios
1. Space-Constrained Industrial Cabinet Smart Metering
In crowded electrical distribution cabinets where standard industrial DTU enclosures are too bulky, the ultra-compact EWD95M-400SL22(485) (measuring only 802827mm) snaps directly onto standard 35mm DIN rails. Connected to RS485 power meters and circuit breakers via transparent transmission, it routes Modbus RTU telemetry data through its 22dBm LoRa link directly to an Ebyte Ethernet gateway (such as the EA01 series), bypassing complex trenching and wiring inside factory power rooms.
2. Distributed Agricultural Pump Station and Reservoir Monitoring
For remote irrigation systems across farmland and reservoirs, layout cables over several kilometers is cost-prohibitive. The EWD95M-400SL22(485) interfaces with Ebyte MA01 Series Modbus Remote I/O units at water pump stations and tank level sensors. Leveraging its 5km LoRa communication distance and 8-28V DC wide voltage input, field nodes receive power directly from 12V/24V solar power systems while wirelessly transmitting operational status back to the central SCADA terminal.
3. Factory Automation AGV and Mobile Equipment Telemetry
Automated Guided Vehicles (AGVs) and overhead cranes in manufacturing workshops require reliable wireless control links resistant to motor noise and metallic obstacles. Operating in the 410-493MHz Sub-GHz band with high-gain LoRa anti-interference capability, the EWD95M-400SL22(485) mounts on AGV chassis via its lightweight 32g plastic shell. It interfaces with onboard PLCs via transparent RS232/RS485, ensuring real-time command routing without Wi-Fi co-channel interference or handoff dropouts.
FAQ Section
1. What are the key mechanical and electrical advantages of the EWD95M-400SL22(485) miniature design?
The EWD95M-400SL22(485) features an ultra-compact plastic enclosure (802827mm, weighing only 32g) with a integrated DIN-rail mount bracket. Electrically, it accepts a wide 8V to 28V DC supply input, enabling direct integration into standard 12V or 24V industrial control cabinets without requiring extra DC-DC step-down converters or custom mounting plates.
2. How does transparent transmission work over the RS485/RS232 interface?
Transparent transmission means the modem acts as a virtual wireless cable. Any raw data frame (such as Modbus RTU, DNP3, or custom serial byte streams) sent into the RS485 or RS232 port of the EWD95M-400SL22(485) is modulated onto the 433MHz LoRa carrier without modification, and converted back to standard serial data at the receiving radio.
3. Can the 410.125MHz to 493.125MHz frequency range be customized for different regional ISM standards?
Yes, while the factory default center frequency is set to 433.125MHz, engineers can configure operating channels across the 410.125MHz to 493.125MHz spectrum using Ebyte configuration software commands. This allows optimal channel separation and compliance with local Sub-1GHz radio frequency regulations across different international regions.
