Advanced Connectivity: Equipped with ESP32 for WiFi and Bluetooth functionality, ensuring seamless connectivity and integration with various devices and networksMultiple Frequency Support: Supports multiple frequencies 433Mhz / 868Mhz / 915Mhz / 923Mhz, making it versatile for different regional requirementsIntegrated GPS: Features a GPS module for precise navigation and capabilitiesEnhanced Display: Comes with an OLED display providing clear and vibrant visual feedbackMCU: ESP32FLASH: 4MBPSRAM: 8MBDriver: CH9102Wireless protocol: Wi-Fi:802.11b/g/nBluetooth: Standard Bluetooth V4.2 + BLEOnboard functions: Three buttons (power + I038 + reset), PMU power management: AXP2101Power supply mode: Supports USB power supply + 18650 battery power supply and other optionsu-blox NEO-6 GPS positioning module: Supports GPS positioning functionOnboard RTC crystal for faster hot start Support external interrupt/wake-upSemtech long-distance low-power LoRa ceiverHigh sensitivity: as low as -148dBm, ceiver rate: up to 300 kbps(The product appearance and printed words may vary depending on the batch, but this does not affect use)Colour:BlackMaterial:PCBPackage Contents:1 x Development Board KitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.