Home Assistant is a leading open source home and office automation platform that lets you monitor and control lighting, climate, energy, security, entertainment, and more in one place.
It focuses on local control for speed, reliability, and privacy, with deep integrations that let you build powerful dashboards and automations tailored to your space.
Backed by a large community, Home Assistant offers broad device support and the freedom to run your smart home or office your way.
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Check in on your home or office from your smartphone using the Home Assistant Companion App. It turns your iOS or Android device into a smart home/office command center, giving you quick access to dashboards and controls, plus extra power like phone sensors (battery, network, location) and push notifications that can be used in automations.
Manual light switches create friction. Someone has to remember which rooms need bright light, mood light, or darkness. Worse, the last person out might forget to turn everything off, so the office burns energy all night.
If you manage more than one Home Assistant server (e.g. home + office, holiday house, or multiple client sites), you don’t need multiple phones.
The Home Assistant Companion App supports multiple servers, and there are a couple of clean ways to keep things separated depending on your privacy needs.
Control4 can deliver a polished smart home or smart office experience, but over time many sites hit the same pain points: proprietary workflows, dealer dependency for some changes, and friction when you want to integrate newer systems or build richer automation logic.
Home Assistant is a strong alternative when you want more flexibility, broader integration options, and better visibility into how your automations actually work. In many cases, KNX is used as a backbone protocol for sensors, lighting, and HVAC, and Node-RED to build and migrate automation logic visually inside Home Assistant.
The best migrations are not “big bang” replacements. The best migrations run Home Assistant in parallel, move the backbone first, and cut over room by room with a rollback path. That is how you keep downtime low.