Product:
- DC7-30V/5V ESP8266 WIFI 2/4 Channels Relay Module ESP-12F Development Board
- Onboard mature and stable ESP-12F WIFI module, large capacity 4M BYTE FLASH
- I/O port of the WIFI module and the UART program download port are all led out to facilitate secondary development
- Onboard WIFI module RST reset button
- ESP-12F supports the use of development tools such as ECLIPSE/ARDUINO IDE, and provides ARDUINOReference program in the development environment
- Onboard 2/4 5V relays, output switch signal, suitable for controlling the working voltage of ACLoad within 250V/DC30V
- Onboard power indicator, 1 programmable LED and relay indicator

Package:
- 1x 5V Power Supply ESP8266 WIFI Dual Channel Relay Module ESP-12F Development Doard

Function pending:
- Onboard AC-DC switching power supply module, power supply mode supports AC90-250V/DC7-30V/5V
- Onboard 4 5V relays, output switch signal, suitable for controlling the working voltage of ACLoad within 250V/DC30V
- On-board power indicator, 1 programmable LED and relay indicator

Package Include:
- 1x AC/DC ESP8266 WIFI 4 Channels Relay Module ESP-12F Development Board

Refund:
- If you can't receive the product within 2 months (60 days), please contact with us, we promise to payback 100% of your money.
- We ensure our products work normally before post.
- If the product is broken before arrival to you, all you should do is taking a photo to show us our broken product. We promise to payback 100% of your money.
- If the item is defective when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition.
- If the item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.

Shipping:
- We only ship to the confirmed address provided by eBay. please make sure your eBay address is 100% matches the address you would like us to ship to.
- Orders will be processed instantly and dispatched within 1-3 business days except holiday, so we do NOT accept any email/message note after you place orders.

Payment:
- eBay Managed Payment. But we only Accept your Ebay Address, please Make sure it's 100% right.
- Payment must be received within 5 business days of auction closing.
- Please leave note for your special request (e.g. Colors or Size) in PayPal when you pay the order.
- Any special request cannot be accepted after 24 hours of payment, because most of orders will be processed instantly and same day dispatched.

Feedback:
- When you satisfied with our product and services please leave us positive feedback.
- If you have got the package, please confirm "Delivery on time" For us.
- If a problem occurs, contact us immediately with any email request.
- Just contact us using the "Ask the seller a question" link on eBay.

We keep a close eye on consumer needs,offering continual innovation and product development and an ever-changing core product range.Each product undergoes rigorous development and testing,keeping quality and longevity in mind.In addition,our trained customer service team work hard to ensure that any queries are dealt with efficiently and strive to ensure that you are always provided with the highest level of customer support.

Any questions,please contact us through eBay message or e-mail,We will reply within 1-2 business days(public holidays not included).
Working time:Monday-Friday 9:00 AM-5:30PM(Beijing)

A complete and correct shipping address is essential.
Customers with shipping addresses outside of the U.S.are responsible for all duties and import taxes.Please contact your customs for information.
For any further information about shipping,please contact our customer service team.

We are happy to be able to offer our customers 60 day returns on our products.All items can be returned and a refund will be issued,provided they are returned within 60 days of receipt of purchase.In the unlikely event that you are not happy with your purchase please do not hesitate to contact our customer services team.

We offer at least 1 year guarantee on all of our products.