EByte E220-400M30S LLCC68 433/470MHz LoRaWAN RF Module 30dBm w/ IPEX

The module communicates exclusively via an SPI interface. You must connect the module's SPI pins (SCK, MISO, MOSI, NSS) to corresponding GPIOs on your host MCU (e.g., ESP32, STM32, Arduino). Additionally, connect the BUSY and RESET pins for proper state control. Ensure your firmware uses a compatible LLCC68 driver library (like RadioLib or the Semtech provided driver) to handle SPI transactions, configure frequency, power, and LoRa parameters like spreading factor and bandwidth.

To maximize range, ensure you are using a 5V power supply for optimal PA performance, attach a properly tuned 433MHz or 470MHz antenna with low-loss cable, and configure the module for its highest transmit power (30dBm). On the receiver side, use a similar high-gain module. Operate in LoRa mode with a low data rate and high spreading factor (e.g., SF12, 125kHz bandwidth) in an environment with clear line-of-sight. Antenna placement and height are critical factors for achieving the advertised distance.

The module draws ~600mA during maximum power transmission, 12.5mA while receiving, and only 1µA in sleep mode. For battery-powered nodes, minimize transmit time and power level, maximize time in deep sleep, and use efficient wake-up protocols. Design your firmware to put the module into sleep mode (via the SPI command) between communication cycles. Powering the module from a 3.3V source reduces Tx current but also slightly reduces output power and range.

Yes, the E220-400M30S supports the entire 410-493MHz range, covering both the 433MHz and 470MHz license-free ISM bands. You select the operating frequency via software configuration sent over SPI. Ensure you use an antenna tuned for your chosen center frequency (e.g., a 433MHz antenna for 433MHz operation). The module's performance is optimized across this band, but regulatory compliance is the user's responsibility for their specific region.

This module provides both an IPEX (U.FL) connector for attaching a removable external antenna via a pigtail and solderable stamp holes for directly connecting a wire antenna or embedding a PCB trace antenna. The IPEX option offers convenience and allows for easy antenna swapping or use of higher-gain external antennas. The stamp holes provide a more permanent, low-cost solution suitable for final product integration where an onboard antenna is desired.