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Sonoff RF Bridge - US $8.79 (~AU $13.21) Delivered @ Banggood

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Pretty good price, probably because it can be quite an effort to get it going with Home Assistant.

If you have a lot of 433Mhz devices lying around because they are obsolete, you can probably re-purpose them with this bridge.

I got this alarm system a while back. https://www.ozbargain.com.au/node/219654 Not the best, but found that I can "pair" the PIR sensors with this bridge.

Also, note that this bridge can only receive, not transmit.

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closed Comments

  • Hi geek001 why do you think the 433 stuff is obsolete? I run a couple of 4 channel pros and use 433 switches as a backup to Google home.

    • No. I do not think 433 stuff is obsolete. But 433mhz devices has been around for a long time. Some 433mhz systems are discarded because they cannot go online or be connected to an app. This rf bridge will enable us to reuse the switches or sensors from obsolete 433mhz systems.

  • will it work with rolling code garage door remote?

    • don't worry about my question. it will not support it

    • What do you mean with rolling code? I am wondering myself if this will work with garage door that is currently controlled by Merlin blue remote.

      • garage door remote sending code that keep changing and sync with the receiver. for security purpose. so it's hard to clone the signal.

        • +2

          You don't clone the signal, it's too hard (because it's secure). Instead, you add an additional trigger. Most garage doors have the capability to add a wired remote (push button) and you can use this input to operate the door instead.

          A simple Wifi-connected relay with an inching function is perfect: https://www.banggood.com/5V-WiFi-Remote-Garage-Door-Opener-C…

          The relay can simulate a wired remote button; usually a momentary ground of the wire is required. No need to mess with high voltage cables or anything. You can even hook it up to Google Assistant or Alexa.

  • +2

    Why do you say it can only receive? I've got this with home assistant and can transmit to my power sockets.

    • Oh. Good on you. How do you do set it up?

      • +1

        I followed this link.

  • Ooh are my ALDI Ceiling fans 433? Hmmm

    • +2

      Check the specs of your ceiling fan/remote. If the frequency is 433.92mhz or thereabouts, it should work. 433Mhz device frequency can vary depending on which part of the world the fans actually came from. https://en.wikipedia.org/wiki/LPD433

      Otherwise, it will only cost you less than $14 to find out.

      • Apparently they are. Next question is how to automate it with my Google Home mini. Not sure how difficult that is.

        • +1

          Should be pretty easy.

          You program the entire thing in eWeLink (Sonoff's Android/iOS app) by training it to recognize the signals from your fan remotes.

          Once you can control everything, link your eWeLink account with Google Assistant, and your devices will show up where you can control them via voice (via phone and Home devices) or the Google Home app.

          Note that if you make changes to the eWeLink programming, those changes won't be synced automatically with Google Assistant. Use the voice command "sync devices" to update.

  • I got a houseful of ceiling fans.. Great time for these.

    How do these compare to Broadlink ?

    • Depends on what you are planning to do with it. Home Assistant support for Broadlink devices are well documented, and do not require flashing. Sonoff devices needs to be flashed to work with Home Assistant.

    • Broadlink has a similar range of products and capabilities, but seems to rely heavily on RF and/or IR signals for their gear. Then you need a hub (like the Broadlink Pro or Black Bean) to control the devices from a phone or via voice.

      In contrast, nearly all of Sonoff's devices have native WiFi connectivity, and connect directly to a cloud service without a hub device. This "bridge" device is intended to provide a link to remote sensors that use little power, and can therefore be powered by internal batteries and communicate over RF, such as motion sensors and reed switches.

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