DC7-28/5V ESP8266 WIFI 4 Channel 30A Relay Module ESP-12F Development Board Secondary Opening

$31.19
  Availability: In Stock
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  Estimated Delivery: 
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  •  Returns & Refund

    Last updated October 05, 2022

    Returns

    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

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    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388
    Israel

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.

    Refunds

    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.

    Exceptions

    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.

    Questions

    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888
    sales@alexnld.com

     


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Description:

Esp8266 four way 30A relay development board is equipped with esp-12f WiFi module, I / O ports are all led out, and supports dc7-28v / 5V power supply mode. It is suitable for esp8266 secondary development and learning, smart home wireless control and other occasions.

Features:

1. Mature and stable esp-12f WiFi module on board, large capacity 4m Byte Flash.
2. I / O port of WiFi module and UART program download port are all led out,It is convenient for secondary development.
3. The power supply mode supports dc7-28v / 5V.
4. On board WiFi module RST reset button and a programmable key.
5. Esp-12f supports the use of eclipse / LDE and other developers provide the reference program for Arduino development environment.
6. On board 4-way 5V / 30A relay, output switch signal, to control the load whose working voltage is within AC 250V / DC 30V.
7. On board power indicator, 1 programmable led and relay indicator.
8. Board size: 122.5 * 87mm
9. Weight: 160g

GND, Rx, TX and 5V of burning and writing port esp8266 are respectively connected with GND, TX, RX and 5V of external TTL serial port module. When downloading, 00 needs to be connected with GND, and then disconnect 00 from GND after downloading. 

Relay output:
NC: normally closed end, the relay is short circuited with com before closing and suspended after closing.
COM: public end. 
No: normal opened end, the relay is suspended before closing, and it is short circuited with com after closing.

Package included:

1 x Relay Module

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