ESP8266 Wifi IoT Relay Board

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The purpose of this design is for learning how to play with the hardware and software of a IOT project, it is based on price competitive wifi module ESP8266.

Hardware Features

• Based on ESP-12F ESP8266 Wifi Board
• This relay board use one AC input, and supports two relay AC output. Please note the output AC power comes from connected AC input power. Relay is connected to work as on/off switch for AC power. Will be danergerous to use in any other cases.
• Use mature AC-DC power module, input volatge 85 265VAC
• Relay Specification: HF32F-G-5-HS, Common open, 10A 250VAC, 30VDC, Control 5V
• Two Lead out buttons BTN1 and BTN2
• Two relay indication LEDs
• One status LED, indicating connecting status in demo code
• A few lead out pins, from top (left) to bottom (right):
• Resevered design for temperature sensor DHT22
• Screw terminal which are easy for wiring output.

Demo Software Features

• Programming skills need, not recommended for unfamiliar user.
• The board flashed with demo test code, you can follow the youtube video and find demo code in the wiki page below. Only nodemcu demo code avaialble.
• The demo code written in R1.1 will do:
  • switch both relay on/off once per second, and wait for smart config
  • When connected to local wifi by smart config, on/off switching relay will stop and you can use mqtt to control it, follow wiki instruction for further details.
• You can use a USB-TTL adaptor to re-program the ESP8266. 
• Demo code is based on NodeMCU LUA coding
• Demo code available, open source, and support smartconfig and MQTT, please find the code below.

Note:

• HIGH VOLTAGE The board is exposed high voltage AC connection,

Documentation:

• Full documentation please see on this page.
• Youtube Video.

Series of ESP Relay Board:

What is the difference of this version (SPST) and SPDT version:

• The output of the relay of SPST is the same as directly AC main input voltage, for powering up connected domestic home appliance in purpose. So the relay only control AC main power on and off
• The output of the relay of SPDT is not connected with AC main input voltge, the relay on this one can switch any other circuits you connected in, can be other AC or DC power, please refer to specification on relay.

Standard Terms and Conditions

1. All prices include VAT 
2. Please read the description carefully before place your order. 
3. We use Door to Door courier service. Please provide your correct physical address for courier delivery (Not PO BOX). 
4. Payment for any order must be made upfront and must reflect in our account before we process the order. 
5. Orders placed,will be dispatched within 1-4 days provided that it falls on a working day, and that payment reflects in the bank account. 
6. We dispatch goods Mon - Fri (excl. public holidays) Delivery only within South Africa 
7. We'll not be responsible for incorrect addresses 
8. Orders not finalized within 24hrs we don't guarantee stock 
9. All warranties are covered by the manufactures themselves and we cannot facilitate any warranty claims besides delivery damages. 
10. We reserve the right to cancel any special without notice. 
11. Pictures may vary from product supplied Prices and Specifications are subject to change without notice. 
12. These images are for illustrative purposes only E. & O.E (errors and omissions excepted). 
13. If you have any problem, don't hesitate to contact us via e-mail.We Request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can sort out any problems you might have. 
14. If item is in your possession more than 7days, it is considered used without any quality problem hence WE WILL NOT ISSUE YOU A REFUND.Please return the faulty items with original packaging.Returned Products Postage costs are none refundable. 
15. Please read the product description carefully because we cannot refund if the product is working correctly.