1PCS AC/DC ESP8266 WIFI single-channel relay module ESP-12F development board for Sale

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1PCS AC/DC ESP8266 WIFI single-channel relay module ESP-12F development board For Sale

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1PCS AC/DC ESP8266 WIFI single-channel relay module ESP-12F development board:
$6.16

Product ViewProduct DescriptionReference description:
I. Overview
The ESP8266 single-channel relay development board is equipped with ESP-12F WiFi module, all I/O ports are led out, and it supports AC90-250V/DC7-12V/USB 5V and other power supply methods.Provide Arduino development environment reference code, suitable for ESP8266 secondary development learning, smart home wireless control and other occasions.

II. Features
1. On-board mature and stable ESP-12F WiFi module with large capacity 4M Byte Flash;
2. The I/O port of the WiFi module and the UART program download port are all led out to facilitate secondary development;
3. Onboard AC-DC switching power supply module, power supply mode supports AC90-250V/DC7-12V/USB5V;
4. The onboard WiFi module RST reset button;
5. ESP-12F supports development tools such as Eclipse/Arduino IDE, and provides reference programs under the Arduino development environment;
6. Onboard 1 5V relay, output switch signal, suitable for controlling loads with working voltage within AC 250V/DC30V;
7. On-board power indicator, 1 programmable LED and relay indicator.III.hardware introduction and description
1. Board size: 80*50mm
Weight: 36g1. L, N: AC90-250V power supply;
2. AC90-250V to DC5V switching power supply (do not touch it directly with your hands when using AC power supply!!!);
3. VCC, GND: DC7-12V power supply;
4. Micro USB: DC5V USB power supply;
Note: AC90-250V, DC7-12V, DC5V USB can choose one of three power supply modes.
5. 6X6mm button: ESP8266 reset button;
6. UART program download port: ESP8266\'s GND, RX, TX, 5V are respectively connected to the GND, TX, RX, 5V of the external TTL serial port module. IO0 must be connected to GND when downloading, and then disconnect the IO0 and GND after downloadconnection;
7. GPIO pin header leads to the port;
8. Relay output terminal:
NC: Normally closed, the relay is short-connected with COM before it is closed, and it is suspended after being closed;
COM: public end;
NO: Normally open end, the relay is suspended before being closed, and shorted to COM after being closed.
9. Power indicator LED;
10. Programmable LED;
11. Relay indicator LED: lights up when it is closed.3. Introduction to GPIO port

序号

名称

功能说明

序号

名称

功能说明

GND

电源地

IO10

GPIO10

Relay

MISO

从机输出主机输入

IO2

GPIO2; UART1_TXD

IO13

GPIO13; HSPI_MOSI; UART0_CTS

IO4

GPIO4

IO14

GPIO14; HSPI_CLK

UART0_RXD; GPIO3

ADC

3V3

3.3V电源

3V3

3.3V电源

SCLK

时钟

MOSI

主机输出从机输入

IO15

GPIO15; MTDO; HSPICS; UART0_RTS

IO9

GPIO9

IO0

GPIO0

CS0

片选

IO5

GPIO5

IO12

GPIO12; HSPI_MISO

UART0_TXD; GPIO1

IO16

GPIO16

5V电源

GND

电源地

IV. Package Include:
1 x AC/DC power ESP8266 WIFI single-channel relay module ESP-12F development board

1. 12 months Manufacturer’s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.
2. Defective items MUST BE reported and returned within the warranty period (and in the original packaging, if possible). You must tell us what the defect is and give us your order number. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN
EXPIRED WARRANTY.

1. You have 7 days to contact us and 30 days to return it from the date received. If the item is in your possession more than 7 days, it will be considered used and WE WILL NOT ISSUEA REFUND OR REPLACEMENT to you. There are NO EXCEPTIONS!
Shipping cost is bear by both seller and buyer in half.
2. All returned items MUST BE in the original packaging and you MUST PROVIDE us with the shipping tracking number, specific reason for the return, and your order ID.
3. We will refund YOUR FULL WINNING offer AMOUNT, upon receipt of the item in its original condition and packaging with all components and accessories included, AFTER BOTH Buyer and Seller cancel the transaction from aliexpress. OR, you may choose to have a replacement.
4. We will bear all the shipping cost if the product(s) is (are) not as advertised.