Dear all,
I am trying to create a wifi or wireless relay board to simply signal another relay board remotely.

There are obviously numerous boards available that will receive a signal via phone or computer & close a relay.
I need to create the signal started from an existing control Board . This will be started from a closed dry contact.

The board then needs to Wifi or wirelessly transfer this contact close some 15-35 meters through at least 2 doors
to the second receiving board which would close a secondary relay which can be wired for control.
It is basically an enable or alarm signal.
It would be a bonus if we could address each board so that the signal received could be identified.


I would appreciate any feedback.
Thanks.

Zamex

 

If I am understanding you correctly, you should be to do what you want easily and economically with two ESP8266 modules using P2P. That is, one module is programmed as an AP and the other a client and you can simply send packets back and forth (turning on/off relays as per programmed code as instructed) and do so easily using the Arduino IDE. This is different than the more usual application where the ESP8266 first logs into your router and goes from there. I have done P2P with the ESP826 a number of times without problems.

There are many tutorials and examples around - here is one to get you started if you are interested https://github.com/deviceinteractions/tutorial-esp8266-http-p2p (note that you do not necessarily have to stick with HTML as in the example).

Hope this helps.