Reyax RYLR993_LITE LoRaWAN Transceiver Module 868/915MHz DIP Board

Connect the module's TX/RX pins to your Arduino's serial pins (e.g., SoftwareSerial on D2/D3). Power it with 3.3V. Use the serial monitor to send AT commands like AT+ADDRESS=1 to set a node address, AT+NETWORKID=18 for network ID, and AT+BAND=915000000 for frequency. Ensure baud rate is set to 9600. Always end commands with a carriage return. Refer to the Reyax AT command manual for full parameter list and LoRaWAN configuration steps.

LoRaWAN mode connects the module to a standardized LoRaWAN network server (like TTN or Helium) using Class A, B, or C protocols, which manage encryption, MAC layers, and adaptive data rate. Proprietary LoRa mode allows direct point-to-point or star network communication between modules using raw LoRa modulation, giving you full control over packet structure and timing but requiring custom firmware on both ends. Switch modes using the AT+PROTOCOL command.

The RYLR993_LITE module requires a 3.3V DC power supply. While specific current figures for this Lite version are not provided, typical LoRa SOC modules consume around 30-40mA during transmission (depending on output power), less than 10mA during active reception, and can achieve microamp-level sleep currents. For battery optimization, use the AT+SLEEP command to put the module into low-power mode between transmissions and ensure your power regulator can handle peak current draws.