Description:

The ESP8266 eight-way relay development board is equipped with ESP-12F WiFi module and supports DC7-28V/5V power supply. Provide Arduino development environment reference code, suitable for ESP8266 secondary development learning, smart home wireless control and other occasions.

Feature:

1. On-board mature and stable ESP-12F WiFi module, large capacity 4M Byte Flash

2. The power supply mode supports DC7-28V/5V

3. Onboard WiFi module RST reset button

4. ESP-12F supports the use of Eclipse/Arduino IDE and other development tools, and provides reference programs under the Arduino development environment

5. There are 8 5V relays on board, output switch signals, suitable for controlling loads whose working voltage is within AC 250V/DC30V

6. Onboard power indicator and relay indicator

Interface:

Programming port: ESP8266's GND, RX, TX, 5V are respectively connected to the GND, TX, RX, 5V of the external TTL serial port module, IO0 needs to be connected to GND when downloading, and then disconnect the connection between IO0 and GND after the download is complete

Relay output:

NC: Normally closed, the relay is short-connected with COM before it is closed, and it is suspended after it is closed

COM: public

NO: Normally open end, the relay is suspended before being closed, and shorted to COM after being closed

GPIO port introduction:

ADC: A/D conversion result, input voltage range 0 -1V, value range: 0 -1024

IO2: GPIO2; UART1_TXD

TXD: UART0_TXD; GPIO1

RXD: UART0_RXD; GPIO3

GND: power supply

5V: 5V power supply

Package Included:

1 * 8 Channel Relay ESP8266 ESP-12F Wireless Module