EByte E28-2G4M27SX 2.4GHz SX1281 RF Transceiver Module
EByte E28-2G4M27SX 2.4GHz SX1281 RF Transceiver Module - Image 2
SKU: IOWC-1604
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EByte E28-2G4M27SX 2.4GHz SX1281 RF Transceiver Module

₹979.00 (Inclusive of all taxes)
Out of Stock

The EByte E28-2G4M27SX is a high-power 2.4GHz RF transceiver module based on the SX1281, featuring SPI interface, 27dBm (500mW) output, and ultra-low current consumption for battery-powered IoT sensor networks and wireless control systems.

Features

  • High-Power 2.4GHz Transceiver: Integrates the SX1281 chip with a built-in PA+LNA, delivering up to 27 dBm (500mW) transmit power for robust, long-range communication up to 8km under ideal conditions.
  • Multi-Modulation Protocol Support: Versatile radio supports GFSK, FLRC, and LoRa modulation modes at 2.4GHz, with data rates from 0.595kbps to 2Mbps, and is compatible with Bluetooth 5.1 dual-mode for flexible application design.
  • Ultra-Low Power Operation: Engineered for battery efficiency with extremely low current consumption in low-power sleep modes, powered from 2.5V to 3.6V, ideal for always-on sensor nodes.
  • Industrial-Grade Reliability: Features a 52MHz industrial-grade crystal oscillator and operates across a -40°C to 85°C temperature range, ensuring stable performance in harsh environments.
  • Compact SMD Design: Small-form-factor, surface-mount module with a 1.27mm pin pitch and IPEX/PCB antenna interfaces for streamlined integration into compact PCB designs.

Out of stock

Description

The EByte E28-2G4M27SX is a professional-grade 2.4GHz RF transceiver module built around the Semtech SX1281 radio IC. It is engineered for developers requiring long-range, high-data-rate wireless links in the globally available ISM band. The module’s integrated power amplifier (PA) and low-noise amplifier (LNA) enable a formidable 27 dBm (500mW) transmit output and a sensitive -132 dBm receiver, pushing the practical communication distance to several kilometers in open environments.

Its core strength lies in protocol flexibility, supporting not only standard GFSK but also the efficient FLRC and long-range LoRa modulation schemes at 2.4GHz. This multi-mode capability, combined with Bluetooth 5.1 compatibility, allows a single hardware platform to serve diverse applications from high-speed data telemetry to low-power, sporadic sensor reporting. The module is supplied by a 3.3V SPI interface for configuration and data exchange, making it directly compatible with common microcontrollers like STM32, ESP32, and Raspberry Pi Pico.

Key Features

  • Long-Range High-Power Link: Achieves communication distances up to 8km line-of-sight thanks to 27 dBm output power and -132 dBm receiver sensitivity.
  • Multi-Modulation & Bluetooth Compatible: Supports GFSK, FLRC, and LoRa modes at 2.4GHz and is compatible with Bluetooth 5.1 dual-mode for protocol versatility.
  • Optimized for Battery Life: Features extremely low current consumption in low-power modes, enabling years of operation from coin-cell or small LiPo batteries.
  • Industrial Temperature Range: Operates reliably from -40°C to 85°C, suitable for outdoor, automotive, and industrial monitoring applications.
  • High Data Rate Capability: Supports configurable air data rates from 0.595 kbps up to 2 Mbps (1.3 Mbps in FLRC mode) for bandwidth-intensive tasks.
  • Robust Anti-Blocking Design: Excellent interference rejection properties ensure stable operation in congested 2.4GHz environments with Wi-Fi and Bluetooth.
  • Easy PCB Integration: Compact SMD form factor with 1.27mm pin spacing and optional IPEX connector or PCB antenna footprint for streamlined design-in.
  • Stable Frequency Reference: Utilizes a 52MHz industrial-grade, low-temperature-drift crystal oscillator for consistent RF performance.

Applications

  • Smart Home & Industrial Sensors: Wireless temperature, humidity, pressure, and occupancy sensors for automation and monitoring.
  • Security & Positioning Systems: Long-range alarm triggers, asset tracking tags, and personnel locator beacons.
  • Wireless Remote Control: High-reliability control links for drones, robotics, industrial machinery, and model vehicles.
  • Healthcare & Wearable Products: Low-power vital sign monitors, patient call buttons, and medical device telemetry.
  • Automotive Telematics: Vehicle data loggers, tire pressure monitoring systems (TPMS), and aftermarket accessory control.
  • Wireless Audio & Gaming: Low-latency audio streaming for headsets and game controller links.

Technical Specifications

RF Transceiver ICSemtech SX1281
Wireless Protocols2.4GHz ISM (GFSK, FLRC, LoRa), Bluetooth 5.1 Dual-Mode Compatible
Frequency Range2400 MHz to 2500 MHz
RF Transmit Power27 dBm (500 mW) maximum
Receive Sensitivity-132 dBm
Supply Voltage2.5 V to 3.6 V (3.3V recommended)
Communication InterfaceSPI (3.3V logic level)
Antenna ConnectorIPEX (U.FL) or PCB pad
Operating Temperature-40°C to +85°C
DimensionsApprox. 12mm x 8mm x 4mm (module only)

Frequently Asked Questions

What microcontroller interfaces are supported by the E28-2G4M27SX module?

The module communicates exclusively via a 3.3V logic-level SPI interface. You must connect the module's SPI pins (MOSI, MISO, SCK) and a chip select (CS) pin to your host microcontroller, such as an ESP32, STM32, or Raspberry Pi Pico. Ensure your MCU's SPI peripheral is configured for 3.3V levels. Additional GPIOs for BUSY and DIO1/2 interrupts are recommended for efficient packet handling, especially when using LoRa or FLRC modulation modes.

How do I configure the module for different modulation modes like LoRa or FLRC?

Configuration is performed by sending specific register write commands over the SPI interface. You must use the official Semtech SX1280/SX1281 driver library or a vendor-provided Arduino library for EByte modules. Within your firmware, initialize the radio by setting parameters like frequency (within 2400-2500MHz), modulation (LoRa, FLRC, GFSK), bandwidth, spreading factor (for LoRa), coding rate, and output power. The process involves several SPI transactions to write to the device's configuration registers after pulling the NSS (CS) pin low.

What is the recommended power supply setup for optimal performance?

For reliable operation and maximum RF output power, supply a clean and stable 3.3V DC. While the module operates from 2.5V to 3.6V, performance, especially transmit power, is guaranteed at 3.3V. Use a low-noise LDO regulator close to the module's VCC pin, and decouple it with a 10µF tantalum and a 100nF ceramic capacitor placed directly at the power pins. Avoid using noisy switching regulators without sufficient filtering, as ripple can degrade RF sensitivity and cause instability.

Can I use a wire antenna instead of the IPEX connector?

Yes, the module provides a PCB pad for directly soldering a 2.4GHz antenna, such as a quarter-wave wire or a ceramic chip antenna. If using the IPEX connector, attach a matched 50-ohm cable and antenna. For a wire antenna, calculate the length for 2.45GHz (approx. 30.6mm for a quarter-wave). Ensure the antenna is placed in a clear area of your PCB, away from ground planes and other components, to maximize radiation efficiency. Always impedance-match the antenna feed line to 50 ohms for best performance.

Package Includes

  • 1 x EByte E28-2G4M27SX 2.4GHz SX1281 RF Transceiver Module

Additional Information

Weight 0.012 kg
Dimensions 12 × 8 × 4 cm

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