ESP8266 ESP-12 ESP-12F CH340G CH340 V2 USB WeMos D1 Mini WIFI Development Board D1 Mini NodeMCU Lua IOT Board 3.3V With Pins

11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)

1 analog input(3.3V max input)

a Micro USB connection

FAQ 

1,How about the quality of your product? 

Before shipping out, all goods have been double verified by KOZHIYOU quality inspection center ,Our test engineer will check for quality, including check the basic function of the hardware and software, the appearance, the packing, the necessary accessories and power adapter plug standard.  Less than 1% repairing rate within one year.    

2, What is the delivery time?
Normally, 1-5 workdays after payment; 
Special requirement orders, delivery time is negotiable.
Rich stock can satisfy urgent requirement.And support small orders.  

3,What are the warranty and after-sale of the product?  

 If the products can't work after receiving it,we will replace your new product immediately and  make the judgement for the issue.
If the products don't meet my demand after I received it,you can return back to us, we will refund your full payment.  
1-2 years warranty according to different products 
1-3 months to replace new items for free.     

4,Can you OEM|ODM? 

 Of course, we can. KOZHIYOU have professional R & D Center,we can develop and manufacture according to customer's requirements. 

We can make your package please Such as printing your logo.  

5,Are you a manufacturer?  
Yes, we manufacture different controller board, Exponsion Shiled Board, sensor Module for ad, 3Dprinter Controller Board,Raspberry Pi,Banana pi.
Our factory and office are in Shenzhen, welcome you to visit at any time!