-plated circuit material Red 2.4g antenna, the signal is more stable Unique gamepad looks novel and cute esp32 s2 chip, kill all firmware Development board, Python language development board Material: PCB Color as shown 9.00 plug-free esp32 KEY S2 finished product tossing a USB flash drive tossing a USB flash drive non-8266 Steps for usage: Link to wifi and enter the settings~ guide, it is not convenient, it is necessary for players It can generate a WiFi signal, and the built-in U disk is automatically mounted, without the need to prepare another U disk, which greatly simplifies the process and eliminates the of plugging and unplugging the U disk. How to use: plug in the machine to start, connect to the wifi of the module. Go to the guide. The time you turn on the inflator, the wifi will automatically connect. Beautiful appearance finished product, genuine chip design Designed for 9.00 system, 't ask about 9.03, it can't be used. Package Contents: 1x PCB Board 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.