WiFi LoRa 32 V4 is a fully upgraded version of the classic LoRa development board. Since its initial launch in 2017, this product series has been highly favored by developers and makers 2MB PSRAM and 16MB external Flash, more suitable for UI and complex system It is suitable for various IoT applications such as smart cities, agricultural monitoring, smart homes, industrial control,security systems, and wireless meter reading, providing developers with a more efficient and flexible development experience USB Type-C interface with integrated voltage - regulation, ESD protection, short-circuit protection, and RF isolation design High-power version with LoRa transmission power increased to 27±1dBm,Added SH1.25-2P solar panel interface. Heltec WiFi LoRa 32 V4 is a fully upgraded version of the classic LoRa development board. upon the powerful features of its predecessors, the V4 version introduces comprehensive optimizations in Transmit Power, power management, expandability and other hardware design. It is suitable for various IoT applications such as smart cities, agricultural monitoring, smart homes, industrial control, security systems, and wireless meter reading, providing developers with a more efficient and flexible development experience. Specifications: MCU:ESP32-S3R2 (Xtensa®32-bit lx7 dual core processor) LoRa Chip:SX1262 Frequency:High-power version: 863-928MHz Max. TX Power:High-power version: 28 ±1 dBm Low-power version: 21 ±1 dBm Max. Receiving sensitivity:-137dBm@SF12 BW=125KHz Wi-Fi:802.11 b/g/n, up to 150Mbps Bluetooth:Bluetooth (LE), Bluetooth 5, Bluetooth Mesh Battery applicable:3.3-4.4V lithium battery Operating Temperature:-20-70 ℃ (The product printed words may vary depending on the batch, but this does not affect use) Color:As Shown Material:PCB