ESP8266 WIFI 16 Channel Relay Module ESP-12F Development Board Power, 16 Way Relay Module, Supply Mode 12V

ESP8266 WIFI 16 Channel Relay Module ESP-12F
Mature and stable esp-12f WiFi module on board, large capacity 4mbyte flash.
I / O port and UART program download port of WiFi module are all led out to facilitate secondary development.
The power supply mode supports DC12 v.
RST reset button and a programmable button for the onboard WiFi module.
Esp-12f supports the use of eclipse / for Arduino LDE and other development tools, and provides reference programs under for Arduino development environment.

On board 16 channel 24 V / 10 a relay, output switch signal, suitable for controlling the load whose working voltage is within AC 250 V / DC 30 v.
On board power indicator, relay indicator and one module with LED.
Two on-board shift registers 74HC595 control the relay switch.
The 16 way relay is controlled by two 74HC595 cascades, so the corresponding control program of 595 is needed to open and close the relay. The reference program has been provided.
Burning and writing port: GND, Rx, TX and 3.3V of esp8266 are respectively connected with GND, TX, RX and 3.3V of external TTL serial port module. IO0 needs to be connected with GND when downloading, and then disconnect IO0 and GND after downloading.
Relay output terminal:
NC: normally closed end, the relay is short circuited with com before closing and suspended after closing; COM: common end.
No: normal start, the relay is suspended before closing, and it is short circuited with com after closing.
colour: green
Material: plastic

Package Contents:
1 x Development Board

Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.

About Us
We provide the good product with the best price,we support Wholesale/Drop Shipping Order
1. For Drop Shipping order, please remark"dropshipping order", we will prioritize it.
2. For Wholesale/Drop Shipping orders, if you have any ideas about the price or package,please contact us in advance,we will give you the best service to satisfy your demands.

About Shipments
1.We will send out the orders ASAP once your payment is completed normally.
2.Please write your complete delivery address with correct phone number and zip code, especially please confirm your full name.

About After-sale Service
We are reliable seller and we have our professional after-sale service for all of our customs. If there is any question about the order,please contact us in advance ,we will always here until you get a happy answer.

About Feedback
1. Please check the package and item when you get carefully to make sure there is no problem.
2. If you have any problem or are not entirely satisfied with your package,please don’t be hesitate to contact us first before leaving negative feedback. We will resolve the problem to satisfy you.
3. If there is no problem, please leave us five star positive feedback.
Your affirmation is our greatest motivation ! !