Features:

1. The smallest 802.11b/g/n Wi-Fi SoC module
2. Uses low power 32bit CPU and compatible with an application processor
3. Main frequency up to 160MHz
4. Built-in 10Bit high precision ADC
5. Support UART/GPIO/PWM/ADC interface
6. Integrate Wi-Fi MAC/BB/RF/PA/LNA
7. Support multiple sleep modes
8. Standby power consumption as low as 1.0mW
9. Embedded Lwip protocol stack
10. Support STA/AP/STA+AP work model
11. Support Smart Config/AirKiss
12. Series Rate up to 4Mbps
13. Universal AT instruction
14. Support serial local upgrade and remote firmware upgrade
15. Small size 18*18*2.8mm

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)

Features:

1. Derived from ESP8266, ESP8285 has a flash memory of 1MB
2. Operating Voltage: 3.3V
3. Totally compatible with ESP8266
4. WiFi support 802.11 b/g/n/e/i
5. High temperature resistant, working temperature: -40℃-125℃

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).

Specifications:

1. NodeMCU based on ESP-WROOM-32 module
2. Based on ESP32 DEVKIT DOIT
3. 30 GPIO Version
4. ESP32 is a dual core 32-bit processor with built-in 2.4 GHz Wi-Fi and Bluetooth
5. 4MByte flash memory
6. 520KByte RAM
7. 2.2 tp 3.6V Operating voltage range
8. In breadboard-friendly breakout
9. USB micro B for power and Serial communication, use to load program and serial debugging

Specifications:

1. Onboard Module: ESP8266 wifi module; in AP mode it can connect with 5 Clients at the same time
2. Operating Way: cellphone carried on wifi module; cellphone and wifi module carried on the same router, and use the APP to control relay
3. Transmission Distance : 400m (max)
4. Relay : 5V,10A/250V AC 10A/30V DC
5. Baud Rate: 9600.
6. Diode effusion protection;
7. Short response time