The Ebyte E290-400T20S is a professional-grade wireless UART serial port module powered by the PAN3060 RF chip, leveraging next-generation ChirpIoT™ spread spectrum technology to deliver exceptional anti-interference performance and high sensitivity within the 410.125 to 493.125MHz frequency band, featuring advanced capabilities like automatic relay networking, IAP online upgrades, and airspeed adaptation for robust IIoT data transmission.
| Radio Frequency Chip | PAN3060 (ChirpIoT™ Modulation) |
|---|---|
| Operating Frequency | 410.125 ～ 493.125 MHz (Default 433.125MHz) |
| Transmit Power | 20dBm (approx. 100mW) |
| Reference Distance | 5000 Meters (Open field, 2.4kbps, 5dBi antenna) |
| Air Data Rate | 2.4k ～ 62.5 kbps (Airspeed Adaptation) |
| Communication Interface | UART Serial Port (TTL level) |
| Operating Voltage | 2.6V ～ 5.5V DC |
| Dimensions | 26 × 16 mm |
| Antenna Interface | IPEX-1 / Stamp Hole |
| Certifications | CE, RoHS compliant |
ChirpIoT™ Tech
Superior spread spectrum modulation for longer range and better robustness than FSK.
AT Command Config
Standard UART interface with easy-to-use AT commands for rapid deployment.
Automatic Relay
Build multi-level networks effortlessly to bypass obstacles and extend coverage.
IAP Online Upgrade
Supports firmware updates through the serial port for future-proof integration.
Interface & Pin Definition
Versatile Antenna Options — Professional RF Optimization
The E290-400T20S is designed for high-density SMD integration. It features dual antenna options: an IPEX-1 connector for external high-gain antennas and a stamp hole for low-cost PCB antenna integration. The module includes RSSI signal strength indication for real-time link quality monitoring.
Practical Application Scenarios
1. Smart Grid and Power Monitoring
The ChirpIoT™ spread spectrum technology provides superior penetration in dense urban environments and electrical substations. E290-400T20S modules are used to aggregate data from distributed smart meters and transformer sensors, ensuring reliable communication even when signals are obstructed by heavy industrial equipment or metal infrastructure.
2. Complex Industrial IIoT Networks
In large manufacturing facilities, the automatic relay networking feature allows for the creation of multi-hop communication paths. This enables data to bypass "blind zones" caused by large machinery, effectively extending the coverage area for plant-wide condition monitoring systems without needing expensive wired cabling.
3. Precision Remote Data Acquisition
Utilizing the airspeed adaptation function, this module dynamically adjusts transmission parameters based on real-time channel quality. This is particularly beneficial for remote telemetry units (RTUs) located in environments where RF noise levels fluctuate, maintaining a consistent link budget for high-integrity data logging in agricultural or hydrological sensor networks.
FAQ Section
1. How does ChirpIoT™ spread spectrum technology compare to standard LoRa?
ChirpIoT™ represents the next generation of modulation, offering enhanced processing gain and improved resistance to multi-path fading. It provides a more robust communication link in challenging environments with high levels of co-channel interference, effectively increasing the reliability of mission-critical IIoT applications.
2. Can I update the firmware without physical access to the device?
Yes, the E290-400T20S supports IAP (In-Application Programming) online upgrades. This allows you to push new firmware versions to deployed modules wirelessly through the UART interface or designated configuration channels, which is essential for remote maintenance of units installed in inaccessible locations.
3. What is the benefit of "airspeed adaptation" in this module?
Airspeed adaptation allows the module to automatically optimize its transmission rate based on the current noise floor and signal quality. By dynamically balancing speed and reliability, it ensures the best possible throughput for your data packets without requiring manual tuning as environmental conditions change.
