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 peer-to-peer WiFi communication application, since two XIAOs detect each other via Wifi, the garage door will open or keep opening, and vice . Improvement: It is nice to add an ultrasonic distance sensor to measure the car-to-door distance andanOLED screen to check the status of the garage. If you want an onboardvoice sensor to the door to open with vocal instruction, try our XIAO BLE Sense. Application 2: Remote Tracker Thanks to the tiny size of the XIAO series, it is suitable to make the wearable devices, such as a small pet tracker. This wearable device can be used as a simple GPS-Tracker which will lock its current location and publish other data via LoRa. Improvement: A compass that shows direction and distance is a great added value to the tracker that you could consider. Meanwhile, publishing altitude, speed, or other parameters could bring more scenarios to this tracker. Besides, the chip ESP32-C3 allowsthis tracker to communicate over WiFi or BLE, and therefore, upload the tracker's data or realize the Long Range-to-MQTT bridge as well. Package Contents: 1 x Development Board 1 x Antenna Only 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.