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LoRa-E5 (STM32WLE5JC) Module, ARM Cortex-M4 and SX126x embedded
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LoRa-E5 (STM32WLE5JC) Module, ARM Cortex-M4 and SX126x embedded
The LoRa-E5 module is a compact wireless communication solution featuring the STM32WLE5JC microcontroller with integrated ARM Cortex-M4 processor and Semtech SX126x LoRa transceiver, designed for long-range, low-power IoT applications. Professional engineers and IoT developers use this module to build smart metering systems, environmental monitoring networks, asset tracking solutions, and industrial sensor networks that require extended range communication with minimal power consumption. This module solves the critical challenge of achieving kilometer-range wireless connectivity in battery-powered devices while maintaining ultra-low standby current and supporting LoRaWAN protocol compliance.
Product Overview
The LoRa-E5 module integrates a powerful STM32WLE5JC microcontroller running at up to 48 MHz with the industry-standard Semtech SX126x LoRa transceiver in a single compact form factor. The ARM Cortex-M4 processor provides 256 KB of flash memory and 64 KB of RAM, enabling complex application logic while maintaining the module's ultra-low power profile. The embedded SX126x transceiver operates in the 433 MHz, 868 MHz, or 915 MHz ISM bands, delivering transmission range up to 10 kilometers in open space with spreading factors up to SF12, making it ideal for applications requiring deep indoor penetration and extended outdoor coverage.
What distinguishes the LoRa-E5 is its integrated design that eliminates the need for external RF components, reducing PCB footprint and development complexity. The module includes built-in antenna matching networks, crystal oscillators, and power management circuitry, allowing engineers to focus on application development rather than RF design. It supports both standalone operation and LoRaWAN network integration through the official LoRaWAN stack, enabling seamless connectivity to public and private LoRa networks. The module's low transmit power consumption of approximately 140 mA at 14 dBm output and sleep current below 2 microamps make it exceptionally suitable for battery-powered deployments requiring multi-year operational lifespans.
Key Specifications
| Specification | Details |
| Product Type | LoRa Wireless Module with Integrated Microcontroller |
| Brand | Seeed Studio / STMicroelectronics |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Microcontroller | STM32WLE5JC ARM Cortex-M4, 48 MHz |
| Flash Memory | 256 KB |
| RAM | 64 KB |
| LoRa Transceiver | Semtech SX126x |
| Frequency Bands | 433 MHz, 868 MHz, 915 MHz ISM bands |
| Transmission Range | Up to 10 km (open space, SF12) |
| Output Power | 14 dBm maximum |
| Transmit Current | Approximately 140 mA at 14 dBm |
| Sleep Current | Less than 2 microamps |
| Protocol Support | LoRaWAN, proprietary LoRa |
| Package | QFN48 or DIP module form factor |
Key Features
- Integrated ARM Cortex-M4 microcontroller at 48 MHz with 256 KB flash and 64 KB RAM for on-module application processing and reduced system complexity
- Embedded Semtech SX126x LoRa transceiver eliminating external RF components and reducing PCB footprint by up to 60 percent
- Ultra-low sleep current below 2 microamps enabling battery-powered deployments with multi-year operational lifespan on standard AA batteries
- LoRaWAN protocol stack support with official certification for seamless integration into public and private LoRa networks
- Multiple ISM band support at 433 MHz, 868 MHz, and 915 MHz for global deployment flexibility
- Spreading factor range from SF7 to SF12 providing configurable range-to-data-rate tradeoff for diverse application requirements
Applications and Use Cases
- Smart Metering and Utility Management: Deploy LoRa-E5 modules in water, gas, and electricity meters for remote reading and consumption monitoring across urban and rural areas with kilometer-range coverage and minimal infrastructure
- Environmental and Agricultural Monitoring: Monitor soil moisture, temperature, humidity, and air quality in distributed farm locations or environmental research sites where cellular coverage is unavailable and power supply is limited
- Asset Tracking and Logistics: Implement real-time location tracking for shipping containers, equipment, and vehicles using the module's low power consumption to maintain tracking for weeks on battery power
- Industrial IoT and Predictive Maintenance: Deploy condition monitoring sensors on machinery and equipment in factories and plants, transmitting vibration, temperature, and performance data over long distances without requiring power infrastructure at sensor locations
- Smart Building and Facility Management: Create wireless sensor networks for occupancy detection, lighting control, HVAC optimization, and security monitoring across large buildings and campuses
- Wildlife and Environmental Research: Track animal movements and environmental parameters in remote locations where traditional wireless infrastructure is impractical or unavailable
How to Use
To begin development with the LoRa-E5 module, first establish a serial connection to the module using a USB-to-UART adapter connected to the TX and RX pins, typically at 9600 baud rate. The module can be programmed using the STM32CubeIDE development environment with the official STM32WLE5 HAL libraries and LoRaWAN stack provided by STMicroelectronics. Configure the module's frequency band, spreading factor, and transmission power through AT commands or by compiling custom firmware. For LoRaWAN applications, register your device on a LoRaWAN network server such as The Things Network, obtaining the necessary AppEUI, DevEUI, and AppKey credentials, then load these parameters into the module's non-volatile memory.
Power the module with a regulated 3.3V supply with adequate decoupling capacitors to handle current transients during transmission. Connect an antenna appropriate for your selected frequency band to the SMA or PCB antenna connector. Implement proper power management by placing the module in sleep mode between transmissions to maximize battery life, using the module's built-in RTC timer to wake at scheduled intervals. Monitor the module's GPIO pins for transmission status and reception indicators. For optimal performance, maintain antenna clearance from ground planes and metal objects, and validate transmission range and packet reception rates in your specific deployment environment before full-scale rollout.
Frequently Asked Questions
What is the maximum transmission range of the LoRa-E5 module?
The LoRa-E5 module achieves transmission ranges up to 10 kilometers in open space under ideal conditions using spreading factor SF12 with 14 dBm output power. Actual range depends on antenna type, environmental obstacles, frequency band, and spreading factor selection. Urban environments with buildings typically reduce range to 2-5 kilometers, while rural open areas achieve the maximum range. Higher spreading factors increase range but reduce data rate and increase airtime, so you must balance range requirements with application bandwidth needs.
Can the LoRa-E5 module connect to public LoRaWAN networks?
Yes, the LoRa-E5 module includes official LoRaWAN protocol stack support and is certified for use with public LoRaWAN networks such as The Things Network, Helium, and commercial operators like Orange, Vodafone, and others. You must register your device on a LoRaWAN network server, obtain the required credentials (AppEUI, DevEUI, AppKey), and load them into the module. The module handles all LoRaWAN protocol requirements including join procedures, encryption, and network communication automatically once configured.
What is the power consumption and battery life expectancy?
The LoRa-E5 module consumes approximately 140 mA during transmission at 14 dBm, 50 mA during reception, and less than 2 microamps in sleep mode. Battery life depends on transmission frequency, spreading factor, and payload size. For example, a device transmitting 10 bytes every 10 minutes using SF7 on a 2000 mAh battery can operate for approximately 18-24 months. Sleep mode current is so low that battery self-discharge becomes the limiting factor for long-term deployments, potentially enabling multi-year operation on standard AA batteries.
Which frequency bands does the LoRa-E5 support?
The LoRa-E5 module is available in three frequency variants: 433 MHz, 868 MHz, and 915 MHz, all operating in unlicensed ISM bands. The 433 MHz variant is suitable for Asia-Pacific regions, 868 MHz for Europe, and 915 MHz for North America and other regions. Select the variant matching your geographic deployment region and verify compliance with local spectrum regulations. Some variants support multiple bands through firmware configuration, so verify your specific module's capabilities.
Can I program custom firmware on the LoRa-E5 module?
Yes, the STM32WLE5JC microcontroller supports full custom firmware development using STM32CubeIDE, Keil MDK, or other ARM development tools. You can write custom applications in C/C++ while leveraging the official STM32WLE5 HAL libraries and LoRaWAN stack, or develop entirely proprietary LoRa implementations. The module includes a JTAG/SWD debug interface for programming and debugging. However, ensure your custom firmware maintains proper power management and RF timing to avoid regulatory non-compliance.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units
Buy LoRa-E5 (STM32WLE5JC) Module, ARM Cortex-M4 and SX126x embedded Online in India
Purchase the LoRa-E5 (STM32WLE5JC) Module, ARM Cortex-M4 and SX126x embedded online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.
LoRa-E5 (STM32WLE5JC) Module, ARM Cortex-M4 and SX126x embedded
The LoRa-E5 module is a compact wireless communication solution featuring the STM32WLE5JC microcontroller with integrated ARM Cortex-M4 processor and Semtech SX126x LoRa transceiver, designed for long-range, low-power IoT applications. Professional engineers and IoT developers use this module to build smart metering systems, environmental monitoring networks, asset tracking solutions, and industrial sensor networks that require extended range communication with minimal power consumption. This module solves the critical challenge of achieving kilometer-range wireless connectivity in battery-powered devices while maintaining ultra-low standby current and supporting LoRaWAN protocol compliance.
Product Overview
The LoRa-E5 module integrates a powerful STM32WLE5JC microcontroller running at up to 48 MHz with the industry-standard Semtech SX126x LoRa transceiver in a single compact form factor. The ARM Cortex-M4 processor provides 256 KB of flash memory and 64 KB of RAM, enabling complex application logic while maintaining the module's ultra-low power profile. The embedded SX126x transceiver operates in the 433 MHz, 868 MHz, or 915 MHz ISM bands, delivering transmission range up to 10 kilometers in open space with spreading factors up to SF12, making it ideal for applications requiring deep indoor penetration and extended outdoor coverage.
What distinguishes the LoRa-E5 is its integrated design that eliminates the need for external RF components, reducing PCB footprint and development complexity. The module includes built-in antenna matching networks, crystal oscillators, and power management circuitry, allowing engineers to focus on application development rather than RF design. It supports both standalone operation and LoRaWAN network integration through the official LoRaWAN stack, enabling seamless connectivity to public and private LoRa networks. The module's low transmit power consumption of approximately 140 mA at 14 dBm output and sleep current below 2 microamps make it exceptionally suitable for battery-powered deployments requiring multi-year operational lifespans.
Key Specifications
| Specification | Details |
| Product Type | LoRa Wireless Module with Integrated Microcontroller |
| Brand | Seeed Studio / STMicroelectronics |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Microcontroller | STM32WLE5JC ARM Cortex-M4, 48 MHz |
| Flash Memory | 256 KB |
| RAM | 64 KB |
| LoRa Transceiver | Semtech SX126x |
| Frequency Bands | 433 MHz, 868 MHz, 915 MHz ISM bands |
| Transmission Range | Up to 10 km (open space, SF12) |
| Output Power | 14 dBm maximum |
| Transmit Current | Approximately 140 mA at 14 dBm |
| Sleep Current | Less than 2 microamps |
| Protocol Support | LoRaWAN, proprietary LoRa |
| Package | QFN48 or DIP module form factor |
Key Features
- Integrated ARM Cortex-M4 microcontroller at 48 MHz with 256 KB flash and 64 KB RAM for on-module application processing and reduced system complexity
- Embedded Semtech SX126x LoRa transceiver eliminating external RF components and reducing PCB footprint by up to 60 percent
- Ultra-low sleep current below 2 microamps enabling battery-powered deployments with multi-year operational lifespan on standard AA batteries
- LoRaWAN protocol stack support with official certification for seamless integration into public and private LoRa networks
- Multiple ISM band support at 433 MHz, 868 MHz, and 915 MHz for global deployment flexibility
- Spreading factor range from SF7 to SF12 providing configurable range-to-data-rate tradeoff for diverse application requirements
Applications and Use Cases
- Smart Metering and Utility Management: Deploy LoRa-E5 modules in water, gas, and electricity meters for remote reading and consumption monitoring across urban and rural areas with kilometer-range coverage and minimal infrastructure
- Environmental and Agricultural Monitoring: Monitor soil moisture, temperature, humidity, and air quality in distributed farm locations or environmental research sites where cellular coverage is unavailable and power supply is limited
- Asset Tracking and Logistics: Implement real-time location tracking for shipping containers, equipment, and vehicles using the module's low power consumption to maintain tracking for weeks on battery power
- Industrial IoT and Predictive Maintenance: Deploy condition monitoring sensors on machinery and equipment in factories and plants, transmitting vibration, temperature, and performance data over long distances without requiring power infrastructure at sensor locations
- Smart Building and Facility Management: Create wireless sensor networks for occupancy detection, lighting control, HVAC optimization, and security monitoring across large buildings and campuses
- Wildlife and Environmental Research: Track animal movements and environmental parameters in remote locations where traditional wireless infrastructure is impractical or unavailable
How to Use
To begin development with the LoRa-E5 module, first establish a serial connection to the module using a USB-to-UART adapter connected to the TX and RX pins, typically at 9600 baud rate. The module can be programmed using the STM32CubeIDE development environment with the official STM32WLE5 HAL libraries and LoRaWAN stack provided by STMicroelectronics. Configure the module's frequency band, spreading factor, and transmission power through AT commands or by compiling custom firmware. For LoRaWAN applications, register your device on a LoRaWAN network server such as The Things Network, obtaining the necessary AppEUI, DevEUI, and AppKey credentials, then load these parameters into the module's non-volatile memory.
Power the module with a regulated 3.3V supply with adequate decoupling capacitors to handle current transients during transmission. Connect an antenna appropriate for your selected frequency band to the SMA or PCB antenna connector. Implement proper power management by placing the module in sleep mode between transmissions to maximize battery life, using the module's built-in RTC timer to wake at scheduled intervals. Monitor the module's GPIO pins for transmission status and reception indicators. For optimal performance, maintain antenna clearance from ground planes and metal objects, and validate transmission range and packet reception rates in your specific deployment environment before full-scale rollout.
Frequently Asked Questions
What is the maximum transmission range of the LoRa-E5 module?
The LoRa-E5 module achieves transmission ranges up to 10 kilometers in open space under ideal conditions using spreading factor SF12 with 14 dBm output power. Actual range depends on antenna type, environmental obstacles, frequency band, and spreading factor selection. Urban environments with buildings typically reduce range to 2-5 kilometers, while rural open areas achieve the maximum range. Higher spreading factors increase range but reduce data rate and increase airtime, so you must balance range requirements with application bandwidth needs.
Can the LoRa-E5 module connect to public LoRaWAN networks?
Yes, the LoRa-E5 module includes official LoRaWAN protocol stack support and is certified for use with public LoRaWAN networks such as The Things Network, Helium, and commercial operators like Orange, Vodafone, and others. You must register your device on a LoRaWAN network server, obtain the required credentials (AppEUI, DevEUI, AppKey), and load them into the module. The module handles all LoRaWAN protocol requirements including join procedures, encryption, and network communication automatically once configured.
What is the power consumption and battery life expectancy?
The LoRa-E5 module consumes approximately 140 mA during transmission at 14 dBm, 50 mA during reception, and less than 2 microamps in sleep mode. Battery life depends on transmission frequency, spreading factor, and payload size. For example, a device transmitting 10 bytes every 10 minutes using SF7 on a 2000 mAh battery can operate for approximately 18-24 months. Sleep mode current is so low that battery self-discharge becomes the limiting factor for long-term deployments, potentially enabling multi-year operation on standard AA batteries.
Which frequency bands does the LoRa-E5 support?
The LoRa-E5 module is available in three frequency variants: 433 MHz, 868 MHz, and 915 MHz, all operating in unlicensed ISM bands. The 433 MHz variant is suitable for Asia-Pacific regions, 868 MHz for Europe, and 915 MHz for North America and other regions. Select the variant matching your geographic deployment region and verify compliance with local spectrum regulations. Some variants support multiple bands through firmware configuration, so verify your specific module's capabilities.
Can I program custom firmware on the LoRa-E5 module?
Yes, the STM32WLE5JC microcontroller supports full custom firmware development using STM32CubeIDE, Keil MDK, or other ARM development tools. You can write custom applications in C/C++ while leveraging the official STM32WLE5 HAL libraries and LoRaWAN stack, or develop entirely proprietary LoRa implementations. The module includes a JTAG/SWD debug interface for programming and debugging. However, ensure your custom firmware maintains proper power management and RF timing to avoid regulatory non-compliance.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units
Buy LoRa-E5 (STM32WLE5JC) Module, ARM Cortex-M4 and SX126x embedded Online in India
Purchase the LoRa-E5 (STM32WLE5JC) Module, ARM Cortex-M4 and SX126x embedded online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion.