EByte E220-900T22S LoRa Module LLCC68 Chip 22dBm 850-930MHz w/ IPEX Antenna

The module is compatible with any microcontroller or single-board computer featuring a UART serial port. It works seamlessly with popular platforms like Arduino (Uno, Mega, Nano), ESP32 and ESP8266 development boards, STM32 Nucleo series, and Raspberry Pi (using USB-to-TTL adapters). Its TTL-level UART interface supports both 3.3V and 5V logic levels, requiring only connections to TX, RX, VCC, and GND pins for basic communication. Configuration is typically done via AT commands sent over this serial link.

You configure the EByte E220-900T22S by sending specific AT commands through its UART interface to a connected microcontroller or PC terminal. Parameters like operating frequency (within 850.125–930.125MHz), transmit power (up to 22dBm), spreading factor, bandwidth, and coding rate are adjustable via these commands. It's crucial to ensure both communicating modules are set to identical frequency, SF, and BW for a stable link. Always refer to the official EByte datasheet for the complete AT command set and proper syntax before programming.

Use a 50-ohm impedance antenna tuned for the 850–930MHz band, such as a whip or dipole antenna with an IPEX (U.FL) connector. The module's specified range of up to 5km is achieved under ideal open-area, line-of-sight conditions with a clear Fresnel zone and a properly matched antenna. In urban or dense environments with obstacles, range will be significantly reduced. For best performance, ensure a high-quality antenna with suitable gain is connected securely, and the antenna is positioned vertically for omnidirectional coverage.

The module requires a 3.3V to 5V DC power supply connected to its VCC pin. While specific operating and sleep currents are not detailed in this datasheet, LoRa modules based on the LLCC68 chip typically have a transmit current of around 120mA at 20dBm and a receive current of about 15mA. Sleep currents can be as low as a few microamps. For battery-powered designs, implement deep sleep cycles and wake the module only for transmission to maximize operational life. Always provide a stable, clean power source with adequate current capability.