Need a simple (non-tech) way to transmit a single button press over 433Mhz

Hardware
1

I am a complete noob, so I will start there.

My System
I have a NUC running HAOS and it is working well at the moment.

My Problem
I have a recirculating pump under my kitchen sink to pull hot water through the pipes before running water. At the sink (which is downstairs), I have an undercounter button hardwired into the pump that I normally go downstairs to press before taking a shower (upstairs).

I also have a 433 Mhz remote (it looks like a glorified doorbell button) that I can press while in my master bath (upstairs) to remotely start the pump. It sometimes works and sometimes doesn’t.

Anyhow, I am searching for a solution that can be integrated into HA that transmits that same frequency to the downstairs pump. Ideally, I would then place a tag near the shower to start the pump with my phone.

Is this a possibility, or is my ignorance showing?

2

I think you can use tasmota remote to forward the rf signal downstairs

3

Thanks. If there is a less techy way to do it, I am open to that as well. I think that device requires skills beyond mine.

4

Would something like this work?

Amazon.com: BroadLink RM4 Mini IR Universal Remote Control (2.4 GHz Wi-Fi Only), Smart Home Automation Wi-Fi Infrared Blaster for TV, AC, STB Audio, Works with Alexa, Google Home, IFTTT : Tools & Home Improvement

5

It’s quite easy, you just need rf signal from the button as trigger then use this rule to forward the same rf signal

Here’s an example for ir, but you can just modify it for rf

6

You can send rf signal but the rf receiver is only enabled during learning mode with broadlink.
So you can’t use your rf button as trigger for this

But you can with this one

https://a.aliexpress.com/_opmFRmX

7

Why over complicate it with radio signals and frequencies? Just get a shelly smart plug (or something similar) and add to home assistant.

1 Like
8

No. Inexperience.
I can think of a dozen ways to accomplish this, but “non-tech” doesn’t grok.

I wouldn’t use 433MHz remote switches for this. My 433 devices are finicky. Most of the time they work as soon as I push the button, sometimes it takes a few seconds to respond, and occasionally it doesn’t work at all. But, it’s hard to beat the price.

Assuming that you want to grow in the Home Assistant ecosystem, adding devices over time, I would say to get a WiFi switch like this. The upside is that this is probably the easiest switch to install (just plug it in). The downside is that you have to use the manufacturers’ EWELink app on your phone, and their cloud service to make it work. There is a custom integration that allows you to use it in Home Assistant without the cloud.

Next up the scale, and my current preference, is to use Zigbee smart switches. I have a dozen of this switch all over my house. The upside is that a robust Zigbee network is fast, reliable and easy to add devices. The downside is that you need to add a Zigbee dongle that makes you Home Assistant host into a Zigbee Hub. It’s only $35 on Amazon, but installing it is a bit techie. Another downside is when I said “robust Zigbee network”, you need lots of Zigbee devices that self-assemble into the Zigbee network. This is because Zigbee devices are a very low RF power compared to WiFi, and thus individual nodes have a short range. Fortunately, most Zigbee devices act as a router/repeater. Which is why I have a dozen of the above mentioned Zigbee switches in my home. No Zigbee device is more than two or three meters from another device which becomes the fabled robust Zigbee Network.

For the ultimate techie, you could put a water pressure sensor on the water line to detect when the hot water faucet is opened. The pressure drop would trigger an automation to turn on the pump until the pressure rises when the faucet it turned off.

The biggest advantage to Home Assistant is that solutions are usually only limited by your imagination. (Sometimes budget will get in the way, but since Home Assistant is organic, you need to keep it fed).

Hope this helps.