I have a device (similar to house alarm system) that has, as output, a normally opened relay connection. Upon triggering, the relay closes and the output is “shorted/closed”. When no longer triggered, the relay opens and the output is “opened” again.
I would like to monitor this device’s output with my SmartThings Hub. So basically, I want a SmartThings compatible device that will take two wires as input and be able to tell me whether the input is “opened” or “closed”
I’ve found several posts about using arduino. Are there any plug and play products that will meet my needs? Also, something not too expensive would be nice.
I have two of the Ecolink sensors to monitor my alarm system as well. I didn’t have a direct open/closed circuit, just a 12v or off circuit, so I had to use some relays to convert to an open/closed signal.
Monoprice no longer carries part #10795 (non-plus version) and now only sells part #15270 (the “plus” version). According to several reviews, the wired input for external switches on the “plus” version is not functional…
The Mimolite ($59.99) would work, but an overkill (more ports than I need) and quite pricey.
So I’m down to Ecolink DWZWAVE2-ECO ($23.39 amazon), and Aeon Labs ZW097 ($34.95 amazon). Both look promising. Is there additional value for the extra $11.56 for Aeon Labs ZW097? The only “significant” differences that I can find so far are:
the Econlink is just ZWave whereas the Aeon Labs ZW097 is ZWave Plus;
the Econlink has a tamper switch built-in (not needed for my case).
I use the Foxx Project water sensors… (I’m in the UK and until recently they had them very cheap)
However; battery life depends how you use it.
If it spends most of it’s time ‘dry’ and only occasionally going ‘wet’ then battery life is almost a year so far.
If it’s the othe way around… well… less than a week!
It seems that they don’t expect to be wet for long so run the batteries down quickly if locked on wet.