There are two types of ESP-32 WiFi wireless Bluetooth development boards, one is welded, and the other is welded with an electric soldering ironFeatures:1. ESP-32 is already integrated antenna and RF balun, power amplifier, low noise amplifiers, filters.2. The complete solution takes up the least amount of printed circuit board area. This board is used with 2.4GHz dual mode WiFi and Bluetooth-compatible chips by 40nm TSMC low power technology.3. The best power and RF properties, which are safe, reliable and scalable for a variety of applications.4.Support three modes: AP, STA, AP+STA coexistence modeDescription:Supports three modes: AP, STA and AP + STA and compatible with Lua program, easy to develop.Specifications:Size: 51.5*28.3mmColor: blackModel: ESP-32Operating Temperature: -40 ~ +85Supply Voltage: 3.3VPackage Included:1* ESP-32 development boardNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow slight dimension difference due to different manual measurement.