SKU: IOWC-1713
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EByte E77-900M22S LoRaWAN Node Module w/ UART & AT Commands

₹739.00 (Inclusive of all taxes)
Out of Stock

The EByte E77-900M22S is a compact, low-power LoRaWAN node module based on the STM32WLE5CCU6 SoC, supporting global LoRaWAN regional parameters (EU868, US915, AS923) and configurable via AT commands over a UART interface for rapid IoT network deployment.

Features

  • Integrated STM32WLE5CCU6 SoC combines Cortex-M4 MCU with Semtech SX126x LoRa transceiver for a complete node solution.
  • Supports global LoRaWAN 1.0.4 standards (EU868, US915, AU915, AS923, IN865, KR920, RU864) and Class A/C operation.
  • Configurable via simple AT commands over UART interface for quick ABP or OTAA network activation.
  • High 22dBm transmit power and -118dBm receive sensitivity enable robust communication over long distances.
  • Ultra-low power consumption with multiple sleep modes, ideal for battery-powered remote sensor applications.

Out of stock

Description

The E77-900M22S module from EByte integrates a powerful STM32WLE5CCU6 system-on-chip, which features a 32-bit Arm Cortex-M4 core paired with a Semtech SX126x-series LoRa transceiver. This all-in-one design eliminates the need for an external microcontroller, simplifying hardware design and reducing the bill of materials for LoRaWAN end-node devices. The module operates across the 868-930MHz frequency band, making it adaptable for various global sub-GHz ISM bands.

Engineered for low-power operation, the module supports multiple deep sleep modes, significantly extending battery life in field deployments where energy harvesting or infrequent data transmission is required. Network configuration and data transmission are managed entirely through a straightforward AT command set via its UART interface, allowing developers to integrate it quickly with host systems or use it as a standalone LoRaWAN communicator. The compact 14x20mm form factor and dual IPEX connector or stamp hole antenna options provide flexibility for different PCB layouts and enclosure designs.

Key Features

  • Complete LoRaWAN Node Solution: Integrates STM32 MCU and SX126x transceiver in a single module.
  • Global Protocol Support: Compatible with LoRaWAN 1.0.4 specifications for EU868, US915, AU915, AS923, IN865, KR920, and RU864 regions.
  • AT Command Configuration: Simple UART-based AT command interface for setting network parameters (ABP/OTAA), data rate, and transmission power.
  • Extended Range Capability: 22dBm maximum transmit power coupled with high -118dBm receive sensitivity for reliable long-range links.
  • Rich Peripheral Set: Exposes SPI, I²C, GPIO, and ADC interfaces alongside UART for connecting sensors and peripherals.
  • Robust Industrial Design: Operates across a -40°C to +85°C temperature range for harsh outdoor and industrial environments.

Applications

  • Smart Agriculture: Remote soil moisture, temperature, and humidity monitoring over wide areas.
  • Industrial IoT (IIoT): Wireless telemetry for tank levels, equipment status, and environmental conditions in factories.
  • Asset Tracking: Low-power location and condition monitoring for logistics and supply chain management.
  • Smart City Infrastructure: Monitoring street lighting, waste bin levels, and air quality sensors.
  • Environmental Sensing: Deploying remote weather stations and flood warning systems in off-grid locations.

Technical Specifications

Microcontroller/SoCSTM32WLE5CCU6 (Cortex-M4)
Wireless ProtocolLoRa, LoRaWAN (Class A, C)
Frequency Range850–930 MHz
RF Transmit PowerUp to 22 dBm
RF Receive Sensitivity-118 dBm
Supply VoltageNot Specified (Typ. 1.8-3.6V for STM32WL)
Operating CurrentLow Power Modes Supported
InterfacesUART, SPI, I²C, GPIO, ADC
Antenna ConnectorIPEX / Stamp Hole
Operating Temperature-40°C to +85°C
Dimensions14 x 20 mm

Frequently Asked Questions

How do I configure the E77-900M22S module to join a LoRaWAN network?

Connect the module's UART TX/RX pins to a USB-to-serial adapter or microcontroller. Use a terminal program at the default baud rate (check datasheet, typically 9600 or 115200). Send AT commands like 'AT+NWM=0' for OTAA or 'AT+NWM=1' for ABP mode, followed by commands to set your DevEUI, AppEUI, AppKey, or device address. Finally, use 'AT+JOIN' to activate the node on your chosen LoRaWAN server (e.g., The Things Network).

What is the power supply requirement and typical current consumption for this module?

The module's core STM32WLE5CCU6 SoC typically operates from 1.8V to 3.6V. You must provide a stable regulated supply within this range. Current consumption varies by mode: active RX can be ~5-10mA, TX at 22dBm may peak around 120mA, and deep sleep modes can draw as low as a few microamps. Implement proper decoupling capacitors near the module's VCC pin for stable RF performance.

Can I use this module in the 915MHz band for North American deployments?

Yes, the E77-900M22S supports the US915 LoRaWAN region. You must configure the correct regional setting using the AT command 'AT+BAND' (e.g., 'AT+BAND=8' for US915). Ensure your LoRaWAN gateway is also configured for the US915 band and that you use an antenna tuned for the 902-928MHz range. The module's 850-930MHz frequency coverage is fully compatible.

How do I connect an antenna, and what type should I use?

The module offers two antenna options: a 1st-generation IPEX (U.FL) connector or stamp holes for a PCB trace antenna. For the IPEX port, use a matched 50-ohm cable and a LoRa-specific antenna (e.g., 868MHz/915MHz with SMA connector). For stamp holes, design a quarter-wave monopole or meandered trace on your PCB, ensuring impedance matching to 50 ohms. Always keep the antenna feed line short to minimize loss.

Package Includes

  • 1 x EByte E77-900M22S LoRaWAN Node Module

Additional Information

Weight 0.0016 kg
Dimensions 2 × 1.4 cm