SKU: IOWC-1735
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EByte E32-433T20S LoRa Module 433MHz SX1278 100mW

₹669.00 (Inclusive of all taxes)
Out of Stock

The EByte E32-433T20S is a compact, 100mW LoRa wireless serial module based on the Semtech SX1278 chip, operating in the 410-441MHz ISM band. It provides long-range, low-power data links for point-to-point or star networks using transparent TTL serial transmission, ideal for Arduino, Raspberry Pi, and industrial IoT applications.

Features

  • Semtech SX1278 LoRa Chipset for robust, long-range spread spectrum communication up to 5km in ideal conditions.
  • High 20dBm (100mW) RF Output Power with software-adjustable levels for balancing range and power consumption.
  • Ultra-Low Sleep Current of just 4µA enables battery-powered operation in remote sensing and telemetry nodes.
  • Wide 2.1V to 5.5V Power Supply Range allows flexible integration with 3.3V MCUs or direct Li-ion battery power.
  • Industrial-Grade Operation from -40°C to +85°C ensures reliability in harsh environmental and outdoor installations.

Out of stock

Description

The E32-433T20S-V8.0 module implements a complete LoRa physical layer transceiver in a miniature 16x26mm footprint. Utilizing Semtech’s SX1278, it employs LoRa spread spectrum modulation to achieve exceptional link budget and interference immunity compared to traditional FSK, making it suitable for noisy RF environments. The module operates as a transparent serial bridge, forwarding UART data directly over the air, simplifying firmware development.

Power management is a key feature, with a high 110mA transmit current and a low 14mA receive current, coupled with a deep sleep mode drawing only microamps. This enables designs that can operate for years on battery power. The module supports forward error correction (FEC), data encryption, and compression to enhance reliability and security. Its four-pad interface allows for either an integrated PCB antenna or an external antenna via a soldered wire, providing deployment flexibility for different enclosure and range requirements.

Key Features

  • Based on the industry-standard Semtech SX1278 LoRa transceiver IC for proven performance.
  • Long-Range Capability with communication distances potentially exceeding 5 kilometers line-of-sight.
  • Advanced LoRa Modulation offers superior anti-interference and multi-path fading resistance versus GFSK.
  • Supports Fixed-Point, Broadcast, and Channel Monitoring transmission modes for flexible network topologies.
  • Integrated Data Encryption & Compression enhances security and reduces on-air time for improved efficiency.
  • Wide Operating Voltage from 2.1V to 5.5V, with optimal performance above 3.3V.
  • Compact 16mm x 26mm Form Factor is designed for space-constrained embedded applications.
  • Global License-Free 433MHz ISM Band Operation simplifies regulatory compliance for many regions.

Applications

  • Smart Agriculture & Environmental Monitoring for soil moisture, weather stations, and livestock tracking.
  • Industrial Wireless Telemetry & SCADA Systems for remote sensor data collection and machine monitoring.
  • Building & Home Automation for wireless control of lighting, security alarms, and HVAC systems.
  • Asset Tracking & Fleet Management for logistics and supply chain visibility over wide areas.
  • Wireless Alarm and Security Systems requiring reliable, long-range notification signals.

Technical Specifications

Wireless Chipset / ProtocolSemtech SX1278, LoRa
Frequency Range410 MHz – 441 MHz (Default 433MHz)
Maximum RF Output Power20 dBm (100 mW), software adjustable
Air Data Rate (BPS)2.4 kbps – 19.2 kbps
Supply Voltage2.1 V – 5.5 V
Transmit Current110 mA (typical)
Receive Current14 mA (typical)
Sleep Current4 µA
InterfaceTTL UART (Transparent Transmission)
Antenna OptionIntegrated PCB antenna or external wire pad
Operating Temperature-40°C to +85°C
Dimensions16 mm x 26 mm (approx.)

Frequently Asked Questions

How do I configure the E32-433T20S module's parameters like frequency and power?

Configuration is performed via AT commands sent over its TTL UART interface. You must connect the module's M0 and M1 pins to specific logic levels to enter configuration mode (both LOW for normal operation, both HIGH for configuration). Using a USB-to-TTL adapter and a serial terminal, you can send commands to set the frequency (410-441MHz), air data rate (2.4k to 19.2kbps), transmission power, and other parameters. The module's datasheet provides the complete command set and baud rate details (default 9600bps for configuration).

What is the recommended wiring for connecting this LoRa module to an Arduino?

Connect the module's VCC pin to Arduino's 3.3V or 5V pin (ensure supply is within 2.1-5.5V), GND to GND, and the TXD/RXD pins cross-connected to Arduino's serial RX/TX pins respectively. For software serial, use any digital pins. The M0 and M1 pins should be connected to digital I/O pins on the Arduino if you need to dynamically switch between normal and sleep/configuration modes. Always ensure a stable power supply and consider adding a decoupling capacitor near the module's VCC pin for optimal performance.

Can I use an external antenna with this module, and what type is compatible?

Yes, the module has four solder pads, one of which is the ANT pad for an external antenna. You can solder a thin wire (a quarter-wavelength, ~16.5cm for 433MHz) directly to this pad or attach a compatible 433MHz antenna with an IPEX/U.FL connector via a pigtail. If using an external antenna, ensure it is tuned for the 433MHz band and has an impedance of 50 ohms. Using an antenna with gain (e.g., 3dBi) can extend range but may affect the radiation pattern.

What is the power consumption profile, and how can I maximize battery life?

The module consumes 110mA during transmission, 14mA while receiving, and drops to a mere 4µA in sleep mode. To maximize battery life, design your firmware to keep the module in sleep mode as much as possible. Wake it up only to transmit sensor data at scheduled intervals. Use the M0 and M1 pins to put the module into sleep mode. Pair it with a low-power microcontroller that also supports deep sleep. The wide 2.1-5.5V supply range allows direct use with a single 3.7V Li-ion cell, potentially enabling multi-year operation on a suitable battery.

Package Includes

  • 1 x EByte E32-433T20S LoRa Wireless Module