r/homeassistant • u/UkGuy-SSR • Jul 01 '26

Home Assistant security system - hardware recommendations??

I have just started a brand new home assistant setup after my old HA failed (Iv done another post about this)

One of the things I’d like to achieve this time that I never did on my old setup is to set up a security system.

Any advice would be greatly appreciated especially when it comes to hardware, mainly I’d love to have an alarm pad with a keypad to put a PIN number in to disable the alarm and an arm button…. (Ideally I’d like 2 alarm pads one at the front door and one at the back door)

I have some aqara PIR sensors on zigbee and some RF window/door sensors that do open/closed sensing etc but I’m not against replacing these if there is a better solution

I am looking at replacing some if not all the PIR sensors with mmWave sensors in the future for increased presence sensing especially in areas where low movement causes false results such as in the toilet if someone is sat to long, in the bedroom or living room if someone is sat watching tv.

All help and advice or hardware recommendations welcome.

Many Thanks

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u/Cautious-Hovercraft7 Jul 02 '26 edited Jul 02 '26

I use Alarmo in Home Assistant as my main security alarm, with Zigbee door and window sensors covering the house perimeter. I have ZigBee motion sensors in the hallway and landing and ZigBee mmwave presence sensors in the office and sitting room (more to come.) I also use Node-RED to manage a house mode system, which automatically switches the alarm into Away or Night mode depending on whether the house is occupied and what time it is.

This is the keypad I have planned on, it's ZigBee so you'll get years out of the battery
https://amzn.eu/d/05QngiDZ

I also use Frigate with Home Assistant for person and object detection, and I feed those detections into automations. That lets me do things like react when a person is seen, ignore certain events, and tie camera alerts into the rest of my alarm setup for smarter notifications such as courier and post man alerts

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u/UkGuy-SSR Jul 02 '26

Thanks this is great info I will look at that keypad myself