I believe the proper name for them is Insteoff now. 
(at least that’s what I’m seeing elsewhere rofl–well, rofl, but sad too)
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I just see their manufacturing capabilities and huge name being helpful. Also I saw a rendering with a GE aux switch which had authentic logos, most companies don’t let other companies use their branding like that…
They have carried that for a while. It’s required for certain no-neutral switch setups.
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I hope it’s Aeotec too!! If it is, perhaps you guys could collaboratively re-address the water sensor space, once I started to tackle and research that part of my smart home–the sensors I wanted were no longer being sold by Aeotec. Grrr, that’s what I get for taking my sweet time to research :(.
Control4 or Crestron, maybe??
May I ask what application one would use the water sensor for? Outside of putting it under the sink I haven’t been able to think of much use.
I have a well pump. If my pipe bursts or leaks, then I could use the sensor to trigger either the valve to be shut, or potentially the power be removed (probably less likely). This would prevent the well pump from continuing pumping in water in my basement while I am away from the house. Same for setting sensors under the dishwasher, washer, sinks, etc…
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Another good place would be by the water heater.
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Pretty nice having the water heater in the unfinished basement, in a tub with a drainpipe leading right to the floor drain.
I put a couple holes in the floor so the dishwasher and refrigerator will mostly drain through the floor into the basement if the worst happens. Not perfect and likely a bit messy–but better than flooding the upstairs.
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If your water feed comes in through a crawl space, you can get the added benefit of monitoring the crawl space temperature in addition to watching for leaks around the feed. You can use an automation to let you know if the crawl space temperature approaches freezing.
I have multiple water sensors scattered around our unfinished basement, monitoring for floods. I consider the water sensors, burglar, and fire alarms too important to use DIY HA stuff, so they are all connected to a dedicated alarm system panel that is professionally monitored by a central station. The water sensors already saved our 2-month-old boiler from being submerged back in February when the sump pump fried itself.
When we installed the new pump, I also added a (I can’t type that Z-company’s name) ZEN15 to monitor the pump’s power usage and run times. I now have automations in Home Assistant to announce every time the pump turns on or off, announce and alert if the pump runs more than 3 minutes straight (indicating a blockage or stuck float switch), and shut the power off after 5 minutes of continuous running to save the pump if it is blocked or running dry…
Ding, ding, ding–that’s exactly it! I believe Aeotec had a lasso water sensor that was built for that…suddenly, they only made it available to licensed contractors (or something to that effect) and then subsequently discontinued it entirely. It’s a shame because EVERY posting (they might no longer be online anymore) at the time that I read have had gushing reviews about them.
I’m not sure which water sensor you were watching, but I see a couple of ZWave water sensors available from Amazon right now (Aeotech & Ecolink). The Aeotech one looks better. But I’ve got one of the Ecolink ones at the far end of the yard, checking for water in an irrigation ditch - so we know when to turn the sprinklers on! It been working quite reasonably for a couple of years.
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Man…you guys are awesome. Thanks for providing so many use cases for these sensors. You all have def opened up my eyes to possibilities. I’ll have to rethink my setup and use case for these sensors now. I can def see the benefit of having one by the hot water heater and in the laundry room as well. Thanks a bunch!
Now back to this Aeotec thing…Mr. Eric - When are you spilling the beans?!! 
And I need some smart motion sensor switches along with a multi button controller that’s usable in a 3 way configuration. Like vreihen, I don’t like giving ALL my money to those ZEN guys. I need some zigbee to balance out my home setup.
On another topic though, I can’t figure out for the life of me why most battery powered sensors are zigbee, but most switches are z wave. It seems counterintuitive to have z wave switches as repeaters but most end devices are zigbee and need repeaters at distance to reach the hub. There’s def a void in quality zigbee switches.
Have you not seen the 4N1? Zwave battery powered (usb option) https://inovelli.com/products/sensors/
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Legal… sucks… lol.
But… https://inovelli.com/aeotec-multipurpose-sensor/
Hopefully this gives some clarity until I can say more 
(NOTE: This is just one page, I have more to build… I needed to get it approved by their brand team, which they did earlier).
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Toilet, washing machine, hot water heater, below sink, AC pan, dehumidifier pan, etc the list is quite long. Personally I have one by my hot water heater, AC pan, dehumidifier pan, and washing machine.
Now, if only someone could build a RELIABLE OUTDOOR Temp/Humidity sensor (Z-wave or Zigbee)…that would be great.
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I can accept that answer. LOL