[Transmitting power]：20dBm
[Communication distance]：5km
[Product size]：80*28*28.5mm
Download Datasheet
EWD95M 433GLxx(xxx) Manual
Configuration Tool
Ebyte Company Profile
| Serial number | project | Specification | illustrate |
| 1 | Product size | 80*28*27 mm | See installation dimensions for details |
| 2 | Product Weight | 32 g | Weight tolerance 2g |
| 3 | Operating temperature | -40℃～+85℃ | Industrial Grade |
| 4 | Voltage range | 5～28V（DC） | The DC version is recommended to use 12V or 24V |
| 5 | Communication interface | RS485/RS232 | RS485 or RS232, choose one , please refer to the product label |
| 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 |
| Model Specifications | Operating frequency | Transmit power | Reference distance | Air speed | Technical characteristics |
| Hz | dBm | km | bps | ||
| EWD95M-400SL22(485) | 410.125～493.125M | 22 | 5 | 2.4k~62.5k | New generation 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 | 22 | 5.6 | / | LORAWAN Protocol |
| EWD95M-400LN22 (232) | |||||
| EWD95M-900LN22 (485) | 850-930M | 22 | 5.6 | / | LORAWAN Protocol |
| EWD95M-900LN22 (232) |
Practical Application Scenarios
1. Remote Industrial Modbus RTU Sensor Data Acquisition
In industrial automation environments, laying physical cables across large facilities is costly and impractical. The EWD95M-400GL20(485) operates as a transparent wireless bridge for RS485 communication, enabling seamless Modbus RTU telemetry collection from field PLCs and sensors back to a central SCADA system over distances up to 5km.
2. Smart Agricultural Irrigation and Environmental Monitoring
For expansive agricultural sites, low-power long-range communication is critical. Utilizing ChirpIoT spread spectrum technology and air wake-up capabilities, this micro DIN-rail DTU connects distant soil moisture sensors, weather stations, and solenoid valve controllers to master gateways without demanding continuous high power consumption.
3. Solar PV Power Plant and Smart Grid Telemetry
In distributed photovoltaic stations or power distribution cabinets, high electromagnetic interference (EMI) often degrades wireless signals. The EWD95M-400GL20(485) features high anti-interference performance, 8-28V DC wide voltage tolerance, and standard DIN-rail mounting, ensuring stable half-duplex telemetry transmission between remote power meters and monitoring terminals.
FAQ Section
1. What makes ChirpIoT technology in EWD95M-400GL20 different from standard FSK radios?
ChirpIoT is an advanced spread spectrum modulation technology that provides significantly higher receiver sensitivity and superior anti-interference capabilities compared to traditional GFSK or narrowband communication. This allows the EWD95M-400GL20 to achieve reliable half-duplex communication up to 5km at 20dBm power while maintaining stable performance in noisy RF environments.
2. How do I configure the baud rate and communication settings on this radio?
The DTU supports wireless configuration and AT command sets. The default factory baud rate is 9600 bps (configurable from 1200 to 115200 bps), and the default operating frequency is 433.125MHz within the 410.125 to 493.125MHz band. Users can adjust sub-packet lengths, communication keys, and network addresses (up to 65,536 addresses) using the official Ebyte configuration tool.
3. Can the EWD95M-400GL20 extend coverage across complex terrain or multi-obstacle sites?
Yes, the radio natively supports automatic relay functionality. By deploying intermediate EWD95M units configured as automatic repeaters, you can effortlessly extend communication distance and bypass physical obstacles without requiring complex network architecture modifications or external controllers.
