ESP8266 WEB SERVER Serial Port Card WIFI SHIELD ESP-13 Expansion Board ESP-WROOM-02 

    Support Dropshipping and Wholesaling. 

    100% Original and Good Quality with Free After-sale Warranty. 

     WiFi adopts industrial-grade chip ESP8266, the module is ESP-13 with metal shield, strong anti-interference ability   

Standard pins are compatible with Uno, Mega2560 and other main control boards, for UNO connection adopts voltage conversion chip, making 3.3V and 5V compatible   

The serial port is controlled by a two-way DIP switch, so that the expansion board can be used as for Uno expansion board alone or as an ESP8266 expansion board   

Configure WiFi parameters and serial port parameters based on Web Server, real serial WiFi, the program does not need any configuration   

It can be used as an independent ESP8266 development board or for Uno expansion board, all pins are led out.   

Wireless standard: 802.11 b/g/n   

Working mode: support STA/AP   

Serial port baud rate support: 1200/2400/4800/9600/19200/38400/57600/74800/115200 bps;   

Serial data bits: 5/6/7/8 bits   

Serial port parity: none   

Serial port stop bit: 1/2 bit   

WiFi working current: continuous transmission: ≈70mA (200mA MAX), standby: less than 200uA   

Wireless transmission rate: 110-460800bps   

Working temperature: -40℃~+125℃   

Colour: blue   

Material: PCB board + metal   

Package Contents:   

1 x expansion 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 Payment 

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    About Shipments 

    1.We will send out the orders ASAP within 2-5 days(except weekends and national holidays) once your payment is completed normally. 

    2.Please write your complete delivery address with correct phone number and zip code, especially Russia and Belarus buyers, please confirm your full name.  

    3.Please notice that we will not responsible for customs duties.Please do the customs clearance by yourself. 

    4.We provide both post shipping and express shippings.For most countries, post shipping takes about 25-35 business days, and longer for some countries like Brazil, Peru. 

    Express shipping inlcude DHL, EMS, AliExpress Premium Shipping and Special Lines like Aramex. It takes about 7 days.(It will delay if your country meet some problem,Worker strike,weather problem and so on.) 

    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 5 star positive feedback. 

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