In the fields of smart lawn mowers, UAVs, and industrial automation, stable and reliable long-range wireless communication is key to ensuring efficient and autonomous operation of devices. Chengdu EBYTE Electronic Technology Co., Ltd.'s EWM226-900H30S series LoRa wireless frequency hopping data transmission module is a professional solution designed specifically for such high-performance application scenarios. This article will deeply analyze the module's technical features, supporting development tools, and its core value in scenarios such as lawn mowers.

EWM226-900H30S Lawn Mower LoRa Module Overview

The EWM226-900H30S is a high-performance LoRa module based on the Semtech SX1262 RF chip, optimized for communication in demanding outdoor mobile devices.

Core Features and Technical Advantages

Powerful RF Performance:

  • High Transmit Power: Up to 30dBm (1 watt), providing strong signal coverage.

  • Ultra-Long Range: In clear, open environments with a 5dBi antenna, theoretical communication distance can reach over 5km, easily covering large gardens, lawns, farms, and industrial parks.

  • High Receiver Sensitivity: As low as -129dBm (@2.4kbps air rate), ensuring reliable reception of weak signals.

Professional Frequency Hopping Anti-Interference Technology

  • Supports both fixed-frequency and frequency hopping (FHSS) transmission modes. Frequency hopping mode effectively avoids interference in the same frequency band, providing extremely high communication reliability in complex 868/915MHz ISM band environments (where other LoRa or FSK devices may exist), which is crucial for lawn mower control that cannot tolerate communication interruptions.

Rich Functions and High Reliability

  • Multiple Working Modes: Supports fixed-point transmission, broadcast transmission, and channel monitoring, adapting to various network topologies such as one-to-many and many-to-one.

  • Industrial-Grade Design: Operating temperature range of -40°C ~ +85°C, adapting to extreme outdoor cold and heat. Parameters are saved when power is off, with a built-in watchdog to ensure automatic recovery in case of accidents.

  • Advanced Functions: Supports LBT (Listen Before Talk) to avoid channel conflicts, RSSI signal strength indication, and user-defined unreadable communication keys to ensure data security.

  • Convenient Interface: TTL-level UART interface, supports a rich set of AT commands for parameter configuration, and supports serial port firmware upgrades.

Compact Mechanical Design

  • SMD package with dimensions of only 21.0mm × 25.0mm, very easy to integrate into space-constrained devices.

  • Provides two antenna connection methods: IPEX Generation 1 interface and stamp holes, meeting different integration needs.

Typical Application Scenarios

  • Smart Lawn Mowers: Enables long-range, anti-interference control and status feedback between lawn mowers and remote controllers or base stations.

  • UAVs and Surveying: Used for reliable data links between UAV ground stations and aircraft.

  • Agricultural IoT: Smart irrigation, large-scale environmental monitoring sensor networks.

  • Industrial Remote Control and Monitoring: Photovoltaic power station monitoring, distributed system management, industrial-grade wireless remote controllers.

  • Smart Home and Building Automation: Long-range sensor data collection and control.

Development Tool: EWT226-900H30S Evaluation Board

To accelerate product development and evaluation, EBYTE simultaneously provides the EWT226-900H30S evaluation and test board.

Core Value of the Evaluation Board:

  • Out-of-the-Box, Zero-Design Startup: Integrates the EWM226-900H30S module, USB-to-TTL chip, level conversion, status indicators, buttons, and antenna interface onto a single board. Users only need to connect to a computer via a Micro-USB cable to immediately start AT command testing and data transparent transmission experiments, without needing to design any peripheral circuits themselves.

  • Complete Interface Access: Key signals such as the module's UART and configuration pins are accessed through pin headers, making it easy for users to connect their own main control MCUs for integration testing.

  • Learning and Debugging Tool: An ideal tool for learning LoRa frequency hopping communication, understanding AT command sets, and verifying communication distance and reliability. Greatly reduces development barriers and shortens the R&D cycle.

Recommended Development Process:

  1. Pre-Evaluation: Purchase the EWT226-900H30S evaluation board and use serial port tools for function and distance testing.

  2. Prototype Development: Connect a custom main controller based on the evaluation board to develop application logic.

  3. Product Integration: After passing testing, directly integrate the EWM226-900H30S module onto your product's PCB.

Why Choose EWM226-900H30S for Lawn Mowers?

  • Conquer Complex Environments: Lawn mowers operating in gardens encounter various obstructions such as walls, trees, and terrain undulations. The 30dBm high power, strong penetration of LoRa, and frequency hopping anti-interference ability effectively address these challenges, ensuring continuous control signals.

  • Ensure Safety and Efficiency: Communication interruptions may cause lawn mowers to lose control. The module's high-reliability design ensures timely and accurate delivery of commands (such as emergency stop and boundary setting), ensuring equipment and personnel safety.

  • Achieve True Long-Range Autonomy: The 5km communication radius allows lawn mowers to operate freely in large estates or parks without worrying about going out of control range, expanding product application scenarios.

  • Simplify Development, Accelerate Time-to-Market: The mature module solution and supporting evaluation board allow manufacturers to focus on core functions such as lawn mower motion control and navigation algorithms, without needing to delve into complex RF circuit design and debugging, accelerating product launch.

About EBYTE's Product Portfolio

Chengdu EBYTE Electronic Technology Co., Ltd. is a national high-tech enterprise with over a decade of experience in IoT wireless communication, providing full-stack products and solutions from chip-level modules to system-level gateways.

Overview of Main Product Lines:

Wireless Communication Modules (Core Business):

  • LPWAN Long-Range Series: LoRa/LoRaWAN modules (such as the EWM226 series in this article), NB-IoT, 4G/Cat.1 modules, meeting low-power wide-area network needs.

  • Short-Range and Local Area Network Series: Wi-Fi, Bluetooth (BLE/audio/dual-mode), Zigbee, SparkLink, Mesh self-organizing network modules.

  • Specialized Wireless Series: Data transmission radios, wireless audio modules, millimeter-wave radar modules, etc.

Embedded Computing Product Line: Industrial-grade core boards (SoM) and single-board computers (SBC) based on processors such as Allwinner and Rockchip, providing computing power for gateways and HMIs.

Industrial Communication and Gateway Devices: Industrial IoT gateways, DTUs (Data Terminal Units), serial servers, Profinet gateways, CAN bus modules, facilitating networking of industrial equipment.

Sensing and Control Product Line: GNSS positioning modules, remote IO modules, sensor modules, antennas, power supplies, and other supporting products.

EBYTE products are known for "industrial-grade, high reliability", have passed international certifications such as FCC, CE, and RoHS, and are sold to over 50 countries and regions. They are widely used in smart homes, Industry 4.0, smart agriculture, intelligent transportation, energy and power, and other fields, making EBYTE a trusted partner for engineers and enterprises to achieve wireless connectivity.