ESP32 integrates antenna switch, RF balun, power amplifier, low-noise amplifier, filter and power management module, and the whole solution occupies a minimum circuit board area. 2.4 GHz Wi-Fi plus Bluetooth dual-mode chip Adopt TSMC's low-power 40nm technology, power consumption performance and RF performance, easy to expand to applications. cost-effective small volume. Easy to embed into any product Powerful, support LWIP protocol, freertos Support three modes: AP, STA, AP+STA coexistence mode Lua programming makes your development easier Material: PCB colour: black Package Contents: 1 x Development Board 1 x Expansion 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.