Looking for a Hubitat-compatible dry contact switch to replace my current battery-operated gaz fireplace RF switch. No power outlets are available below the fireplace, therefore zigbee or z-wave+ preferred vs. power-hungry WiFi.
Does anyone have such a setup? If so, what brand, model, drivers are recommended?
I seriously doubt that you'll find a dry contact switch that is battery powered for the simple reason that dry contact switches are with relays. Relays use a lot of power to stay energized thus draining the batterie very fast. So unless you power it with a car battery or something, this is unrealistic.
Start planning to get electricity to it whether it's low voltage (small cable and easy to route even behind baseboards) or mains power.
EDIT : I stand corrected, see post #4 Battery-powered dry contact switch? bellow!
Agree with @nclark. I often use 24 gauge security wire for low voltage runs from dry contacts. It has a white jacket and very small diameter which allows you to easily hide it behind shoe molding, baseboards, etc.
These types of device do exist, they typically use "latching" or "pulse controlled" relays, so a short input pulse latches the relay on and then another short input pulse is required to unlatch it.
One option for this is the POPP Door Opener Controller - POPP Door Opener Controller | Sirens and Locks | Products | Z-Wave Europe Store
They are pretty good, work well from a 9V battery and have dry contact output NC or NO and a dry contact input too. It's a FLiRS device so responds almost instantly (make sure you have "beaming" compatible mains-powered Z-Wave devices) and has reasonable battery life in my experience.
WoW, never thought about latching relays, that is a clever way to get around power requirements. I stand corrected!!! 
TBH no idea why Z-Wave manufacturers (or ZigBee) don't produce a proper dedicated device to handle this, not sure why really since the technology as existed for ages, for example in radiator TRVs and locks .... same principle, battery powered frequently listening devices that just use a brief pulse control to "do" something.
The POPP device I linked to is a bit of a hack as it uses door lock Command Classes, but underneath it's literally just a dry-contact latching relay FLiRS device.
Thanks ! I was starting to despair that such a device didn't exist. Unfortunately z-wave devices purchased in Europe may not be compatible in US (where I live) due to using different frequencies 
Was anyone able to find one that would work in the US?
the mimo lite and mimo 2 will run off a 12 volt battery as that is what i used and now use the newest for my dog gate.. i have it hooked up to a deep cell battery.. not sure if it will run of some more portable 12v power but you may be able to find something.
You could also consider replacing your RF switch with a regular toggle switch, and then mounting something like this over the toggle switch. Its battery powered, and just moves the toggle switch between on and off positions.
Amazon reviews indicate it works with Hubitat.
Edit:
If you want zigbee instead of z-wave+, you can use this battery powered switch:
https://www.amazon.com/THIRDREALITY-Smart-Light-Switch-Starter/dp/B07HGXMFJ3/
Reviews indicate that it also works well with Hubitat.
Is this the type of situation that the fibaro smart implant fgbs-222 is good for?
Was trying to get more info about the FIbaro and possibly using it on a battery, but that website page is a nightmare, wow that webmaster should get fired ASAP, trying to scroll down the page at a fast pace is just a bad experience. So I'll let someone else figure it out.
(PS: thanks to Fibaro for having a feedback page when you saw I left the page early, gave me an opportunity to let you know what I thought about your webmaster)
Sorry for the rant 
I think the viability due to power drain and the demand is far too low. The only Zigbee example I've seen is from IKEA. Technically their shades use a battery powered contact. However, it is not on all the time as mentioned. It's possible to have a dry contact that keeps state with very little power draw, but it's not inexpensive to manufacture for the low consumer demand it would garner.
https://www.amazon.com/Aeotec-Aeon-Labs-ZW097-Contact/dp/B0155HSUUY
Says "Currently Unavailable" - Z-Wave.com says the same.
That is a sensor, not a switch like the OP is looking for.
No, that's designed to be mains powered (via low voltage DC adapter).
I did find a ZigBee device a while back but can't find it actually for sale anywhere. A lot of these manufacturers list all sorts of devices but don't actually produce them until somebody puts in an order that hits their MOQ.
https://www.climax.com.tw/new/xe-1zbs.php
That looks pretty cool as it has one input and one output.
ya not avail. anywhere i can see. would try one if i could find it.
also take another look at the mimolite.. it will run off of 9v even though i am using 12.. i did test it with a 9v battery and does work.. no idea how long the battery will last.. but use lithium..
Securifi listed compatibility with it and their Almond 3 router, but the device manual was published in 2016, so most likely this device is just out of production. Probably didn't produce many due to low demand and possibly poor battery life may have been a factor that contributed to low popularity.
bought this milolite. Pairs great with hubitat on a regular 9V battery, but not and able to flip on/off unless wired. Also the battery runs dry overnight.
Any recommendations for the right model of battery?
May want to take a look at the zooZ Multirelay it has 3 dry contact relays, 2@15a 1@20a contact
rating, Zwave plus, runs on 12v to 24v AC/DC or on USB Power. Can be configured as momentary, or toggled. $39. on Amazon. I Bought 2 of them But still haven't played with them yet.
Hope this help full.
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