Jrifedptry DC 5V STM32 4G Networked Dual-Way Relay Relay Development Board Onboard AIR780E Module I/O Port STM32 Development Board

3. Flip-top nano card holder, easy to load and unload; 2. Onboard AIR780E module, low power consumption, sleep power consumption as low as 600uA; 4. Onboard blue AIR780E network status indicator; 1. Using the and stable STM32F103 series 32-bit microcontroller, users can develop based on AT instructions or directly based on AIR780E; 5. Onboard reset button and user button, users can develop their own required functions;