Home Security Systems & Alarms

Best Home Security Systems for Home Assistant (Local vs Cloud)

By the Home Security Systems & Alarms editorial team · Research-based (no hands-on testing) - see how we evaluate · Last updated July 8, 2026

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If you run Home Assistant, "works with Home Assistant" is not one feature - it is two very different ones, and the difference matters more for a security system than for anything else in your house. A light bulb that loses its integration is an inconvenience. An alarm that loses its integration when your internet drops, or when a manufacturer quietly changes an API, is a security hole.

This guide sorts the realistic options by the question that actually decides whether Home Assistant control will be dependable: does the system talk to Home Assistant locally, on your own network, or only through the manufacturer's cloud? We are describing documented integration behavior from official Home Assistant integration pages and vendor documentation, not results from a lab we do not run.

Local vs cloud: the distinction the badge hides

A "Home Assistant compatible" claim can mean either of these, and the marketing rarely tells you which:

  • Local integration. Home Assistant communicates with the alarm hardware directly on your LAN. Arming, sensor states, and the siren keep working during an internet outage or a vendor-cloud outage. Nothing about your alarm's state travels to a third party, and a manufacturer app update cannot silently break your automation.
  • Cloud integration. Home Assistant reaches the system by calling the manufacturer's servers over the internet. It works when everything is up, but it depends on three things staying healthy at once: your broadband, the vendor's cloud, and an API the vendor is under no obligation to keep stable. Many of these integrations rely on reverse-engineered APIs, so they break without warning when the vendor changes something.

For a smart-home enthusiast the appeal of local control is partly privacy and partly principle. For a security system it is also reliability: the whole point of an alarm is that it works at the worst moment, which is exactly when the internet might be down. That is why our recommendations lean toward local integration, and why we are explicit about which options are cloud-bound.

One more thing to set expectations before the list: local integration is not the same as monitoring. A locally controlled Home Assistant alarm will flash your lights, sound a siren, and push a notification to your phone, but no one is dispatching police unless you arrange that yourself. If professional response matters to you, read our professional vs self-monitoring guide before you commit to a DIY, cloud-free build.

The genuinely local options (no cloud dependency)

1. Build it in Home Assistant itself (the most local, lowest ongoing cost)

The most private and most resilient "system" is not a branded product at all - it is Home Assistant acting as the panel. Home Assistant's built-in Manual alarm control panel (or the widely used community add-on Alarmo) provides arm-away, arm-home, disarm, entry and exit delays, and trigger logic, all running on your own hardware. You supply the physical parts with an open radio protocol, usually Z-Wave or Zigbee: door and window contacts, motion sensors, a siren, and a keypad.

Because the logic runs locally, the alarm keeps functioning if your internet drops, and there is no monthly fee at all. Community build guides put the hardware for a three-bedroom home in the rough range of $250 to $350, one-time. Commonly cited components include a Z-Wave controller stick such as the Zooz ZST39 (around $35, with S2 encryption and long-range support), a loud Z-Wave siren such as the Aeotec Siren 6 (around $50, roughly 105 dB with a tamper switch), and the Ring Alarm Keypad Gen 2 (around $40), which pairs natively to Home Assistant's alarm-panel entity over Z-Wave and gives you real arm and disarm buttons plus code entry. Treat those prices as planning figures to verify, not quotes.

Best for: people who genuinely enjoy running Home Assistant and want zero cloud, zero fees, and total control. Worst for: anyone who wants a polished app out of the box or professional dispatch - here, you are the integrator and, unless you add a monitoring layer, you are also the monitor.

2. Konnected (turn a wired panel into a local Home Assistant alarm)

If your home already has hardwired door, window, and motion sensors - the legacy of an old DSC, Honeywell, or GE install - Konnected is the cleanest way to bring them into Home Assistant without ripping anything out. Its Alarm Panel boards are ESPHome-compatible and either replace the old panel (a conversion kit) or sit alongside it (an interface kit), exposing every existing sensor to Home Assistant. Konnected markets the setup as fully local with no required monthly fee, and its boards can run local alarm logic so a Home Assistant outage does not disable the alarm.

Best for: homes with existing wired sensors you want to reuse locally. Worst for: renters or homes with no existing wiring, where the DIY Z-Wave route above is simpler and cheaper.

3. Envisalink (keep a pro-installed DSC or Honeywell panel, add local control)

Another way to preserve an existing wired system is the Envisalink board from EyezOn, which gives a DSC or Honeywell/Vista panel a TCP/IP interface on your local network. Home Assistant's official Envisalink integration is event-based and reports partition status, so you can arm and disarm and react to sensors in near real time, all locally. The Envisalink v4 (roughly $100, one-time) is the current model; the integration also supports the older evl3.

Best for: owners of a functioning DSC or Honeywell/Vista panel who want smart, local control without a new system. Worst for: anyone starting from scratch, since it presumes you already have a compatible wired panel.

The cloud-dependent integrations (they work, but lean on the vendor)

These are real, in some cases official, integrations. They can be the right call if you already own the hardware and accept the trade-off. Just know that each one routes through the internet and the manufacturer's servers, so an outage on either end, or a vendor API change, can take your control offline.

Ring Alarm - official but cloud-only

Home Assistant's official Ring integration connects through Ring's cloud API; it does not talk to your devices locally. The alarm panel and Ring's Z-Wave sensors are supported, and a popular community add-on, ring-mqtt, adds richer features (panic buttons, event snapshots, live streaming) - but it is still cloud-based. Ring Alarm is architected around Ring's own app and cloud, so local, third-party control was never a design goal. If you already own Ring Alarm, the integration is usable; if privacy is a driver for choosing Home Assistant in the first place, weigh Ring's documented history of privacy and law-enforcement-access issues, which we lay out in our home security camera privacy scorecard.

Abode - official cloud integration, broad by design

Abode has one of Home Assistant's longer-standing official integrations (its Abode integration dates back to Home Assistant 0.52) and the company positions itself around wide smart-home compatibility. It brings the alarm and its sensors into Home Assistant to trigger automations. It is cloud-based, and unlocking the system's full capability generally means an Abode subscription, so budget for the recurring cost if you go this route.

SimpliSafe - integrates, but treat it as fragile

SimpliSafe is the cautionary tale. An official SimpliSafe integration exists, but it is cloud-based, requires a manual web-authentication step to set up, and has a documented reliability problem. Community reports describe it dropping offline several times a day, and since the Home Assistant 2024.6 change to how alarm-panel entities validate codes, the integration can no longer reliably arm or disarm SimpliSafe systems, because SimpliSafe's API insists a code is required. In practice, plan on read-mostly, intermittent sensor data rather than dependable control. Choosing SimpliSafe because of Home Assistant would be a mistake; if you already own it, keep your expectations low and do not build critical automations on top of it.

The systems that essentially do not integrate

Two of the most heavily advertised names are the weakest fit here. Vivint and ADT are proprietary, professionally installed ecosystems with no official or reliable local Home Assistant path for consumers. There is no consumer-facing local API to build on, and their business model is the opposite of the open, no-fee, self-controlled setup Home Assistant users usually want. If deep Home Assistant integration is a genuine requirement, cross both off the list - and if you are trying to leave a Vivint or ADT contract to do exactly that, our guide to cancelling ADT without a termination fee and our costs and contracts guide cover the exit terms first.

Quick decision table

OptionIntegration typeOngoing feeBest for
Home Assistant + Z-Wave/Zigbee (Alarmo or Manual)Fully localNoneEnthusiasts wanting maximum control and no cloud
KonnectedFully localNone requiredHomes with existing hardwired sensors to reuse
EnvisalinkFully localNone requiredExisting DSC or Honeywell/Vista wired panels
Ring AlarmCloud onlyOptional Ring plan for pro monitoringExisting Ring owners who accept cloud dependence
AbodeCloud onlySubscription for full featuresBuyers who want a packaged system and accept cloud
SimpliSafeCloud, unreliableMonitoring plan for most featuresNobody choosing a system for Home Assistant
Vivint / ADTNone (proprietary)ContractNot Home Assistant users

How to choose, in one paragraph

If local control is why you use Home Assistant, pick one of the local routes: build it yourself with Z-Wave or Zigbee and Alarmo for a new setup and zero fees, use Konnected to reuse existing wired sensors, or add Envisalink to a working DSC or Honeywell panel. Reach for a cloud integration (Ring or Abode) only if you already own the hardware and accept the internet dependence, and treat SimpliSafe as a bonus rather than a plan. Whichever way you go, decide the monitoring question separately - a local alarm is only as good as who responds to it - and if avoiding recurring fees is the goal, our no-contract systems comparison shows what you keep and give up at each level.

Where to go next

Sources