Parameter: Microprocessor: ESP32 Main frequency: 240MHz LoRa Node Chip: SX1262 Operating Frequencies: 863~928MHz Bluetooth: Bluetooth LE: Bluetooth 5, Bluetooth mesh Screen Size: 0.49 inch OLED screen Power Supply: USB, lithium battery Memory: 384KB ROM; 512KB SRAM; 16KB RTC SRAM; 8MB SiP Flash Sleep Current: <10?A Development Environment: Ar duino Specification: Microprocessor: ESP32-S3FN8 (32-bit dual core processor, five stage pipeline rack structure, main frequency up to 240MHz); Type C interface with complete voltage regulator, ESD protection, short circuit protection, RF shielding and other protection measures; Onboard SH1.25-2 battery interface, integrated lithium battery management system (charge and discharge management, overcharge protection, battery power detection, USB/ battery power automatic switching); Integrated WiFi, LoRa, Bluetooth three network connections, onboard WiFi, Bluetooth dedicated 2.4GHz metal 3D antenna, reserved IPEX (U.FL) interface for LoRa use; Onboard 0.49-inch 64*32 dot matrix OLED display, which can be used to display debugging information, battery power, and other information; Integrated CP2102 USB to serial port chip, convenient for program downloading, debugging information printing; Supports the Arduino version of the ESP32 + LoRaWAN protocol routine. This is a standard LoRaWAN protocol that can communicate with any gateway/base station running the LoRaWAN protocol; With good RF circuit design and basic low-power design, it is convenient for IoT application vendors to quickly verify solutions and deploy applications. Packing List: 1 * Wireless Stick V3 1 * Antenna 1 * Battery Power Cord