ESP8266 WiFi Module, UART, SPI, ESP-01

The ESP8266 WiFi module combines the Espressif Systems ESP8266 chipset with the required components to get started quickly. It offers UART and SPI and can easily be accessed with microcontrollers and Arduino. The ESP8266 chipset is a powerful and programmable WiFi-SoC.
Please note that the module is not 5 V tolerant.

Specification:

• VCC: 3.3 V
• 802.11 b/g/n
• Wi-Fi Direct (P2P), soft-AP
• Integrated TCP/IP protocol stack
• Integrated TR switch, balun, LNA, power amplifier and matching network
• Integrated PLLs, regulators, DCXO and power management units
• +19.5dBm output power in 802.11b mode
• Power down leakage current of <10uA
• SDIO 1.1/2.0, SPI, UART
• STBC, 1×1 MIMO, 2×1 MIMO
• A-MPDU & A-MSDU aggregation & 0.4ms guard interval
• Wake up and transmit packets in < 2ms
• Standby power consumption of < 1.0mW (DTIM3)