ESP32 is already integrated antenna and RF balun, amplifier, low-noise amplifiers, filters,and management module. The entire solution takes up the least amount of printed circuit board area.This board is used with 2.4 GHz -mode Wi-Fi and Bluetooth chips by TSMC 40nm low technology, and RF properties best, which is safe, reliable, and scalable to a variety of applications.High performance-price ratioSmall volume, easily embeded to other productsStrong function with support LWIP protocol, FreertosSupporting three modes: , STA, and +STASupporting Lua program, easily to developColour:blackMaterial:plasticPackage Contents:1 x ESP32 38pin development boardOnly the above package content, other products are not included.Note: Light 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.