The E290-400T20S is a professional-grade wireless serial port module (UART) based on the PAN3060 RF chip. Utilizing next-generation ChirpIoT™ spread spectrum technology, it provides exceptional anti-interference performance and high sensitivity. Operating in the 410.125~493.125MHz band, it supports automatic relay networking and IAP online upgrades. Designed for reliable IIoT data transmission, it simplifies complex wireless communication with standard AT commands and airspeed adaptation.
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.
Technical Specifications
| 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 |
| Data Updated | May 2026 |
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.
Ideal Applications
Wireless PLC data links, sensor telemetry, factory automation
Smart water, gas, and electricity meter data aggregation
Security alarms, smart locks, household appliance networking
Soil moisture sensors, greenhouse monitoring, irrigation control
Street lighting automation, environmental sensing, asset tracking
Developer Resources
Full technical documentation, AT command sets, and demo codes for E290 integration.
📄 Download User Manual 💻 Software & SDK SupportFrequently Asked Questions
Q: What is the benefit of the ChirpIoT™ modulation?
A: ChirpIoT™ technology offers higher link budget and better interference immunity compared to traditional FSK. This allows for significantly longer transmission distances (up to 5km) and more stable links in noisy industrial RF environments.
Q: How does the Automatic Relay networking function work?
A: Each module can act as a repeater. When a direct link between nodes is blocked by obstacles or distance, intermediate nodes automatically relay the data packets, effectively extending the network range without manual routing configuration.
Q: Can I upgrade the module's firmware after installation?
A: Yes. The module supports IAP (In-Application Programming). You can perform firmware updates through the UART interface, making it easy to maintain and add features to deployed devices.
Q: Does the E290-400T20S support Air Wake-up (WOR)?
A: Yes. The Air Wake-up function allows the receiver to stay in a low-power sleep state and only wake up when it detects a specific wireless signal, which is critical for extending battery life in wireless sensor nodes.
Q: What power supply range does the module support?
A: The module supports a wide DC input range from 2.6V to 5.5V. To ensure the full 20dBm transmit power, a stable 5.0V supply is recommended.
