Installed in ceilings or side walls, the system consists of a water supply, a water distribution piping system and sprinkler heads. Camera feeds and motion triggers are piped into HA.A fire sprinkler system is a simple, but key, active component of a domestic or commercial building’s fire protection system. NVR and cameras are handled by a dedicated physical NVR for some of my cams, and a dedicated docker on my NAS for some others. If HA is down, thermostat still MUST work. Heat/Cool is handled by the programmable thermostat itself, with overrides being handled by HA. are handled by the alarm which tells HA what's up. All my interior motion sensors, water leak sensors, window/door, etc. Security is all handled by a dedicated alarm system which has a home assistant integration. They send a signal to my alarm system which then sends to HA to do more stuff, but if either of those downstream connections fail, it's no worse than it was in a dumb house before. Fire/Smoke/CO monitoring are all handled by the built in hard wired smoke detectors. In my books, it's a useful toy and makes life fun/easier sometimes, but. I won't trust anything that is life saving, security related, or absolutely must work every single time to HA. If after trying it yourself and you don't trust the system it won't have cost you more than $100.00 in parts, and you can always go commercial then. But then again a commercial one would have also lost connectivity at this time. This is of course dependent on the net still being up if there is a fire in the area. You could also install some sprinklers under the eaves and on the roof for added protection which off the shelf systems for the garden are not built for. You could have the Panic Button installed at home so that in the event of a fire anyone could hit it to activate the system and override all timers to turn it on if there was a fire nearby or likely. It will cost peanuts compared to buying an off the shelf system. If it does fall over you can fix it yourself. You have absolute control of your system and can tailor it to suit yourself. I imagine you have days/weeks/longer to iron out the kinks before it is a panic day. Yes, you will have some small issues with programming, but the thing is you do not need it to be mission critical tomorrow. All of the bits I have made myself stand up well with few errors and there are a few people who have posted sprinkler systems based on HA online. Get a reliable VSD pump and good filters. You should be able to set something similar up in HA which would make it far more robust than a cheap off the shelf irrigation controller that you have to just "trust" to be working. In my work system each valve has a defined flow rate - if the valve is open and the flow is too high or too low it will alarm, if there is flow when a valve isn't supposed to be open it will alarm. Integrating a flow meter into the system is critical, pressure sensors help too. The most important thing is that you have some sort of alarm for when things fail. I have multiple commercial grade irrigation and climate controllers at work in an orchard and plant nursery, they are no more reliable than anything else because it's usually power supplies, relays, or valves that fail. I've been a professional horticulturalist and commercial irrigator for 35 years. I've had a diy OpenSprinkler system (RPi Zero W + relay board) connected to HA for all this summer, it has been faultless so far.
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