Application: Internet of Things, Wearable Devices, Health Monitoring, Education Color: White + Black Material: PCB Low-Power (LP) Networking Rapid Prototyping Application 1: Smart Private Garage This is a device-to-WiFi communication application. Two XIAOs detect each other via WiFi, triggering the garage door to open or remain open. Improvement: Add an ultrasonic distance sensor to measure the car-to-door distance and an OLED screen to monitor the garage status. For voice control, integrate an onboard voice sensor to open the door with vocal instructions. Consider using Sense for enhanced functionality. Application 2: Remote Tracking Thanks to the compact size of the series, it is suitable for creating wearable devices, such as a small pet tracker. This wearable device can function as a simple GPS tracker that locks the current location and transmits data via LoRa. Improvement: Adding a compass to display direction and distance provides added value. Including altitude, speed, or other parameters can expand the use cases. The ESP32-C3 chip enables WiFi or LoRa communication, allowing data upload or creating a Long Range-to-MQTT bridge. Package Contents: 1 x Development Board 1 x Antenna Note: Only the items listed above are included. Other products are not included. Light reflection and differences in display screens may cause slight variations in color representation. Measurement error is +/- 1-3 cm.