About this item: 
1. Durable material: This product is made of high-quality material, durable, long service time, firm and stable in use. 
2. The complete solution takes up the least printed circuit board area. This board is used with 2.4GHz dual-mode WiFi and wireless chips using 40nm TSMC low-power technology. 
3. The best power and RF characteristics are safe, reliable and scalable for various applications. 
4. Meticulous workmanship: The meticulous design, perfect in workmanship, durable and long service life. 
5. Compact and portable: being so mini and light-weight, this product does not take much space and can be easily taken away. 
6.in Arduino IDE，choose ESP32 DEV