Features:

1. The smallest 802.11b/g/n Wi-Fi SOC module
2. UART baud rate up to 4Mbps
3. General AT commands can be used quickly
4. Low power 32-bit CPU, can also serve as the application processor
5. Up to 160MHz clock speed
6. Built-in 10 bit high precision ADC
7. Supports UART/GPIO/IIC/PWM/ADC
8. SMD-16 package for easy welding

Specifications:

1. Manufacturer: Ai-Thinker
2. Low power 32-bit CPU, can also serve the application processor
3. Support UART/SPI/I2C/I2S/PWM/ADC/DAC interfaces.
4. Built-in 520 KB SRAM, external 4MPSRAM
5. Supports audio input methods such as MIC and Line-in.
6. Support for firmware upgrade (FOTA)

Specifications:

1. The on-board level shift circuit
2. Arduino UNO R3 and the compatible board can directly connect to this module;
3. Interface logic voltage: 3.3V / 5V compatible(On-board level shift circuit);
4. Working voltage: 4.5~5.5V (Onboard 3.3V LDO Regulator);
5. Working current: 240mA(MAX).