Advanced Connectivity: Equipped with ESP32 for WiFi and Bluetooth functionality, ensuring seamless connectivity and integration with various devices and networks Multiple Frequency Support: Supports 433MHz frequency, suitable for different regional requirements Integrated GPS: Features a GPS module for precise navigation and tracking capabilities Enhanced Display: Includes an OLED display for clear and vibrant visual feedback MCU: ESP32 FLASH: 4MB PSRAM: 8MB Driver: CH9102 Wireless Protocol: Wi-Fi 802.11b/g/n Bluetooth: Bluetooth V4.2 + BLE Onboard Functions: Three buttons (power, IO38, reset), PMU power management with AXP2101 Power Supply: Supports USB power and 18650 battery power GPS Module: u-blox NEO-6 supports GPS positioning Onboard RTC crystal enables faster hot start; supports external interrupt/wake-up LoRa Transceiver: Semtech long-range, low-power transceiver High Sensitivity: Up to -148dBm; transmission rate up to 300 kbps Note: Product appearance and printed markings may vary by batch, but this does not affect functionality Color: Black Material: PCB Package Contents: 1 x Development Board Kit Note: Other items not included. Lighting and display differences may cause slight color variations. Measurement tolerance: +/- 1-3 cm