The RAK4631 can be easily programmed through the for Arduino-IDE or other IDE extensions. It also has a version RAK4631-R configured with the low-code development platform RUI3, which allows users to develop customized firmware via RUIAPI and also send AT commands via USB, UART or Bluetooth Multiple Connection Methods, Multiple Scenario Applications,With communication features such as LoRa® and Bluetooth, the RAK4631 module is suitable for a variety of applications in the IoT field The module is compliant with LoRaWAN®1.0.2 protocol and supports LoRa® point-to-point communication. In sleep mode, power consumption is as low as 2.0 uA; in transmission mode, LoRa® output power is up to 22 dBm, and Bluetooth output power is up to 4 dBm, making it a cost-effective communication solution Specification: Processor NordicnRF52840 Ultra Low Power MCU 32-bit ARM Cortex™-M4 CPU Semtech SX1262 64 MHZ CPU Clock LoRa® Features Compliant with LoRaWAN 1.0.2 protocol LoRa®PA booster mode with 22 dBm output power; 7.8KHz to 500KHz 7.8KHz to 500KHz bandwidth low power wireless system Operating bands:EU868, CN470, US915, AS923, AU915, KR920, IN865 Temperature range:-40℃-+85℃ Supply voltage: 2.0-3.6 V Dimensions: 20 mm x 30 mm (The product printed words may vary depending on the batch, but this does not affect use) Type:915MHz Color:As Shown Material:PCB Package Contents: 1 * Module With antenna(Accessories color and style are random and cannot be specified)