E290-400R20D RS485 LoRa Wireless Module
Automatic Relay Networking | PAN3060 Chip | 20dBm Power | 5km Range | RS485 Interface | 433MHz Band
The E290-400R20D is an industrial-grade wireless module built on the PANCHIP PAN3060 RF chip. It features an integrated RS485 interface and utilizes advanced ChirpIoT™ spread spectrum technology. Designed for complex IoT environments, it supports automatic relay networking, allowing for multi-level communication to bypass obstacles and extend range up to 5km. It is a plug-and-play solution for factory automation, smart utility metering, and remote monitoring.
Professional Industrial Design — High-Precision 32MHz Crystal Oscillator Built-in
Automatic Relay
Multi-level networking automatically extends range without complex configuration.
ChirpIoT™ Tech
Superior anti-interference and sensitivity compared to traditional FSK solutions.
AT Command & IAP
Supports online firmware upgrades and comprehensive AT command control.
Communication Key
Hardware-level data encryption to ensure secure wireless data transmission.
Technical Specifications
| Main Chip | PANCHIP PAN3060 Industrial Grade |
|---|---|
| Working Frequency | 410.125 ～ 493.125 MHz (Default 433.125MHz) |
| Transmit Power | 20dBm (approx. 100mW) |
| Reference Distance | 5km (Clear and open, 2.4kbps, 5dBi antenna) |
| Interface | RS485 Interface (PH2.0 & 2.54mm holes) |
| Supply Voltage | DC 4.5V ～ 5.5V (5V recommended for max power) |
| Air Speed | 2.4k ～ 64.5kbps (User programmable) |
| Dimensions | 38 × 23 mm |
| Operating Temp | -40℃ to +85℃ (Industrial design) |
| Modulation | New Generation LoRa Spread Spectrum |
| Data Updated | May 2026 |
Interface & Pin Definition
Industrial RS485 Interface — Ready for IoT Integration
The module provides a standard RS485 interface via PH2.0 connectors, supporting long-distance wired communication to the host MCU or PLC while maintaining the wireless link.
Ideal Applications
Industrial control systems, wireless PLC links, remote I/O data polling
Wireless meter reading (water, gas, electricity) via relay networking
Large-scale greenhouse monitoring and irrigation valve control
Street lighting automation and environmental sensor aggregation
Logistics tracking and remote status updates in warehousing
Developer Resources
Full technical documentation and configuration software for E290-400R20D.
📄 Download User Manual 💻 Configuration Tool / Demo CodeFrequently Asked Questions
Q: How does the Automatic Relay networking work?
A: The E290 series can be configured as a relay node. When the target node is out of range, the system automatically finds intermediate nodes to pass the data, effectively bypassing obstacles and extending communication distance without needing extra base stations.
Q: Can I upgrade the firmware after installation?
A: Yes. The module supports IAP (In-Application Programming), allowing you to update the firmware online without needing to disconnect the module from your hardware setup, ensuring your system always has the latest features.
Q: What is ChirpIoT™ technology?
A: ChirpIoT™ is a specialized spread spectrum technology that provides better sensitivity and anti-interference performance than traditional FSK/GFSK modulation. It allows for reliable data links even in noisy industrial environments with high RF interference.
Q: Is the E290-400R20D compatible with other Ebyte modules?
A: It is fully compatible with the E290-T series of the same frequency band. This allows you to mix RS485 interface modules with TTL UART modules in the same network for flexible system design.
Q: What power supply should I use?
A: The module operates on DC 4.5V to 5.5V. To ensure the full 20dBm (100mW) transmission power, a stable 5V DC power source is recommended. It features a power-efficient sleep mode consuming only 590uA.
