1. Product Overview
The EBYTE E32-400M30S is a high-performance LoRaTM SMD wireless module designed for long-distance communication. Based on the Semtech SX1278 chip, it operates in the 433/470 MHz frequency band and offers a maximum transmission power of 1W. This module integrates a built-in power amplifier (PA) and low noise amplifier (LNA) to enhance both transmission range and receiving sensitivity, ensuring stable and reliable communication.
Its advanced LoRaTM modulation technology provides superior anti-interference performance and extended communication distance compared to traditional FSK and GFSK modulation products. The E32-400M30S is suitable for a wide range of applications including smart home systems, wireless meter reading, industrial sensors, and various long-distance wireless communication equipment. The module adheres to industrial standards and has obtained FCC, CE, and RoHS certifications.
Figure 1: EBYTE E32-400M30S LoRa Module. This image displays the top view of the E32-400M30S module, showing its model number, QR code, RoHS and CE certifications, manufacturer (EBYTE), and serial number placeholder. The module features an IPEX antenna connector.
2. Key Features
- Measured communication distance up to 10km.
- Maximum transmission power of 1W, with software multi-level adjustable settings.
- Supports 433/470 MHz frequency bands.
- Supports data transmission rates between 0.018K and 37.5Kbps in LoRaTM mode.
- Supports data transmission rates up to 300kbps in FSK mode.
- Supports multiple modulation modes: LoRaTM, FSK, GFSK, MSK, GMSK, OOK.
- Large FIFO capacity, supporting 256Byte data cache.
- Supports 3.3V~5.5V power supply; 5V supply ensures optimal performance.
- Industrial grade standard design, supporting -40 ~ 85 °C for long-term operation.
- Available with IPEX and stamp hole options, facilitating secondary development and integration.
3. Application Scenarios
The E32-400M30S module is versatile and can be integrated into various systems requiring robust and long-range wireless communication. Typical applications include:
- Home security alarm and remote keyless entry systems.
- Smart home and industrial sensor networks.
- Wireless alarm security systems.
- Building automation solutions.
- Wireless industrial-grade remote control.
- Health care products.
- Advanced Meter Reading Architecture (AMI).
Figure 2: Common Application Scenarios. This image illustrates four primary application areas: Home security alarm, Industrial sensor, Smart home, and Healthcare products, demonstrating the module's broad utility.
4. Physical Dimensions
The E32-400M30S module is compact, designed for easy integration into various electronic devices. Its precise dimensions are crucial for PCB layout and enclosure design.
Figure 3: Module Dimensions. This image shows the physical dimensions of the E32-400M30S module, measuring 38.5mm in length and 24mm in width. It also highlights the IPEX antenna connector and stamp hole design.
5. Technical Specifications
Detailed technical specifications for the E32-400M30S module are provided below:
| Parameter | Value |
|---|---|
| Model | E32-400M30S |
| Chipset | Semtech SX1278 |
| Frequency Band | 433MHz / 470MHz (ISM band) |
| Working Frequency Range | 410-493MHz |
| Transmission Power | Max 1W (30dBm), software adjustable |
| Modulation Modes | LoRaTM, FSK, GFSK, MSK, GMSK, OOK |
| LoRaTM Data Rate | 0.018Kbps to 37.5Kbps |
| FSK Data Rate | Up to 300Kbps |
| FIFO Capacity | 256 Byte |
| Power Supply | 3.3V ~ 5.5V (Optimal at 5V) |
| Operating Temperature | -40 °C to 85 °C |
| Antenna Interface | IPEX / Stamp Hole |
| Certifications | FCC, CE, RoHS |
Figure 4: Frequency Band Support. This image highlights the module's support for global license-free ISM frequency bands, specifically 433/470 MHz, with a working frequency range of 410-493MHz, adapting to various application scenarios.
6. Setup and Integration
The E32-400M30S is a pure RF transceiver module and requires programming via an MCU drive or specialized SPI debugging tools for full functionality. Users should refer to the detailed datasheet and programming guides provided by EBYTE for specific pin configurations and communication protocols.
6.1 Pin Definitions and Connections
Refer to the module's datasheet for a comprehensive pinout diagram and recommended connection schematics. Proper connection of power, ground, SPI interface (SCK, MISO, MOSI, NSS), and other control pins (e.g., RESET, DIO) is essential for correct operation.
6.2 Antenna Connection
The module supports both IPEX and stamp hole antenna interfaces. Ensure a suitable 433/470MHz antenna is connected to the module. For optimal performance, use an antenna with appropriate gain and impedance matching.
6.3 Software Programming
The module's parameters, such as frequency, transmission power, and data rate, are configured via SPI commands from a microcontroller (MCU). Developers will need to implement the necessary SPI communication routines in their firmware to control the SX1278 chip. EBYTE typically provides example code or libraries to assist with this process.
7. Operating Principles and Performance
The E32-400M30S leverages LoRaTM technology, a spread spectrum modulation technique derived from chirp spread spectrum (CSS) technology. This enables long-range communication with high interference immunity and low power consumption.
7.1 LoRaTM Modulation
LoRaTM modulation spreads a narrow-band signal over a wider channel bandwidth, making it robust against noise and interference. This technique allows for reliable data transmission over long distances, even in challenging environments.
7.2 Field Tested Distance
Under ideal conditions, the module can achieve significant communication distances. Field tests demonstrate its capability:
Figure 5: Field Tested Distance. This graphic illustrates a field tested distance of 5km under specific conditions: clear and open area, antenna gain of 5dBi, antenna height of 2m, and air data rate of 2.4kbps. The module is capable of up to 10km under optimal conditions.
7.3 Low Power Consumption
The E32-400M30S is designed for energy efficiency, making it suitable for battery-powered applications. Its low power consumption in deep sleep mode significantly extends battery life.
Figure 6: Low Power Consumption. This image demonstrates the module's low power consumption, consuming only 2µA in deep sleep mode, which greatly extends battery life. An example shows battery life extending from 100% to 95% in half a year and 90% in one year.
8. Troubleshooting
If you encounter issues with the E32-400M30S module, consider the following common troubleshooting steps:
- No Communication:
- Verify power supply voltage (3.3V-5.5V) and stability.
- Check all SPI connections (SCK, MISO, MOSI, NSS) and ensure they are correctly wired and enabled.
- Confirm the MCU's SPI configuration matches the module's requirements (e.g., clock polarity, phase).
- Ensure the module's RESET pin is properly controlled.
- Short Communication Range:
- Check antenna connection and ensure it is securely attached and appropriate for the frequency band.
- Verify antenna gain and placement; obstructions can significantly reduce range.
- Confirm transmission power settings in your software; ensure it's set to the desired level (max 1W).
- Check for environmental interference from other wireless devices.
- Data Corruption/Loss:
- Ensure data rates are correctly configured and within the module's supported range for the chosen modulation.
- Check for proper FIFO management in your software.
- Verify signal integrity on the SPI bus.
9. Maintenance
The E32-400M30S module is designed for long-term, reliable operation with minimal maintenance. However, adhering to best practices can ensure its longevity and performance:
- Environmental Conditions: Operate the module within its specified temperature range (-40 °C to 85 °C) and avoid excessive humidity or corrosive environments.
- Power Supply Stability: Ensure a stable and clean power supply to prevent damage or erratic behavior.
- Physical Protection: Protect the module from physical shock, vibration, and electrostatic discharge (ESD) during handling and operation.
- Firmware Updates: Periodically check the EBYTE official website for any firmware updates that may improve performance or address known issues.
10. Manufacturer and Support Information
The E32-400M30S module is manufactured by EBYTE. For technical support, detailed datasheets, programming guides, and the latest information, please visit the official EBYTE website.
Manufacturer: EBYTE
Official Website: http://www.cdebyte.com/
Figure 7: Manufacturer Information. This image shows the product packaging with manufacturer details, including "Chengdu Ebyte Electronic Technology Co., Ltd." and contact information, confirming EBYTE as the manufacturer.
This product complies with relevant international standards, including FCC, CE, and RoHS, ensuring its quality and safety for global use.
