The ESP-WROOM-32 module is an industry leading integrated WiFi + BLE solution with less than 10 external components. Technical Details: Microcontroller: ESP-WROOM-32 module USB to Serial Port Chip: CP2102-GMR Operating Voltage: DC 5V Operating Current: 80mA (average) Current Supply: 500mA (Minimum) Operating Temperature Range: -40? ~ +85? WiFi mode: Station/SoftAP/SoftAP+Station/P2P WiFi protocol: 802.11 b/g/n/e/i (802.11n, speed up to 150 Mbps WiFi frequency range: 2.4 GHz ~ 2.5 GHz Blue-tooth protocol: conform to Bluetooth v4.2 BR/EDR and BLE standards

Board is fairly well built and fits nicely on breadboard. The board has brought out most I/O ports to pin headers of 2.54mm pitch. These provide an easy way of connecting peripherals according to your own needs. It also integrates with TSMC's low-power 40nm technology, so that power performance and RF performance are safe and reliable, easy to expand to a variety of applications. It integrates antenna switch, RF balun, power amplifiers, low noise amplifiers, filters and power management modules. The ESP-WROOM-32 module is an industry leading integrated WiFi + BLE solution with less than 10 external components.