Thanks thgoebel. Yeah from what I've read now, I can't use RS-485 when the Shelly. What I'll do instead is use the relay output from the rain snow sensor to indicate when it's raining or snowing which is a reasonable work around.
Bernard
Beiträge von Bernard Jennings
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I have a rain snow sensor that has two outputs - a relay that is off and that switches on when the sensor gets rain on it - see green/white lines in the attached wiring image.
The other output is RS485A and RS485B - yellow/blue lines in the wiring image attached.
I'm reading up about RS485 to see if what I need to do can be achieved. But would welcome any guidance.
As it rains I'm assuming the voltage output changes the more rain there is on the sensor; and if it snows it outputs something to indicate snow. Not sure. But I was wondering if I use the Shelly 1 temperature sensor add-on, could I connect the rain snow sensor RS485A or S485B to the Shelly 1 temp add-on and use the output (which would show up as temperature change) to indicate the amount of rain I'm getting.
Two images are attached, one is just a picture of the sensor. The other is the wiring outputs. I'm guessing that the Yellow or Blue line could be connected to the same wiring that the temperature probe would attach to on the temp add-on?
The rain snow sensor operates on 12 to 24V - at least the one I have says this on the box.
I realise I might be able to do this with the Shelly Uni. But I have a few spare Shelly 1 with the Add-On and thought I might as well use one of them for this.
Bernard
Wellington, New Zealand
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I bought 10 PIR from AliExpress that use a relay to do switching of the load. Wired up as per the image attached, configured the Shelly1 so the SW connection expects and on or off switch action. Works fine. Link to product is below. They're just over $NZ5 which is about $Euro2.5.
https://m.aliexpress.com/item/4000085781075.html?spm=a2g0n.order_list.0.0.21ef1802t6cBmC