SMART HOME BUTLER · BEDROOM
She got up at 2am. How do you know she made it back to bed?
No camera, and no watching what she does. One job only: if she has been out of bed too long, let the family know.
The walk to the bathroom at 2am is the most dangerous walk of the day
A lot of falls among older people happen in the middle of the night, and the reasons are not mysterious. Blood pressure has not caught up yet, so the first few seconds standing up can bring on dizziness. The room is dark and the eyes have not adjusted. The floor may hold a pair of slippers, a cable, a threshold. Put those together and that short walk becomes the riskiest stretch of floor in the house.
The harder part comes afterwards. If a fall happens and nobody notices, someone can lie there for a very long time. What usually decides the outcome is not the fall itself but how long it took before anyone found out.
So the instinct is often to put in a camera. But that conversation is difficult. A parent hears it as being treated like someone who needs supervising, and the adult child does not feel good about it either. And once installed, a camera mostly hangs there unwatched, including on the one night it would have mattered.
Turn it around. You do not actually need to know what she is doing in that room. You need to know one thing: that she left the bed, and a reasonable amount of time has passed without her coming back. One sensor can tell you that, and it never records a single image.
Why time works better than pictures
A normal night-time trip to the bathroom takes roughly eight to twelve minutes from getting up to getting back in. Walk over, use the toilet, wash hands, walk back. That length is remarkably consistent for any given person, which makes it a useful thing to judge against. Back in bed inside the window means nothing happened and the system stays silent. Well past it is the only case worth telling anyone about.
The beauty of that is how little it needs to know. Not what you are doing, just whether you are in bed. Almost no information, and yet enough to judge on.
What it actually did, one night at a time
The same picture, told as words, shows how restrained each step is.
- 02:14
The bed is empty
The mat under the mattress flips from occupied to empty. The system turns on the bedside lamp at 5%, a warm yellow just bright enough to show the floor. It will not wake anyone and it will not make the eyes snap shut.
- 02:14
A clock starts, and nothing else
In the same second an invisible stopwatch begins running. No notification goes out. No record leaves the house. It is only counting.
- 02:21
Back in bed, case closed
The mat flips back to occupied. The stopwatch resets and the lamp fades out two minutes later. Nobody's phone made a sound and nobody woke up. This is what almost every night looks like.
- Another night, 02:29
Past fifteen minutes
This time the stopwatch reaches fifteen and has not reset. A push notice goes to the family member in the next room: she got up at 02:14 and has been out of bed for fifteen minutes. That is the whole message. No picture, no audio.
- 02:39
Ten more minutes, and it reaches further
Still not back. A second push goes to the daughter three hours away, with the same timestamp attached. Then the system stops. It will not fire again for this trip. The rest is for a person to judge.
Draw the line out loud, before anything gets installed
Putting this in a parent's bedroom rarely fails for technical reasons. It fails on feelings. Saying exactly where the line sits, up front, tends to make it far easier to accept.
What the system can see is whether the bed is occupied. That is all. It does not know where she went, what she did, when she fell asleep or how often she turned over. A bed mat measures pressure, and the only signal it emits is present or absent. There is no third possibility in between.
What the system sends out is one line of text: the time she got up and how many minutes it has been. No image, no sound, no location. In terms of information, it sits at the same level as a notice telling you a parcel arrived.
And one more thing worth saying out loud. The point of this is not surveillance, it is sharing the load. It does not replace anyone's caregiving. It lets the person in the next room actually sleep, and it lets the one living far away stop waking at 3am wondering whether tonight is the night. Older people usually do not enjoy being a source of worry either, and framing it that way changes the answer more often than not.
The four things it takes care of
It removes the dark
A soft light on the floor whenever she gets up. It sounds trivial, but it addresses the single most common cause of the fall: not being able to see where the feet are going.
It shortens the wait
If something does happen, the time before anyone finds out drops from "when we got up in the morning" to fifteen minutes. That gap is often the whole difference in outcome.
It splits the load
Nobody has to sleep with one ear open. The phone rings when it should, and the rest of the time you can genuinely rest. A carer's sleep matters too.
It shortens the distance
Family living far away are not shut out, they are simply second in line. No need to call every day, and no risk of being completely in the dark.
Before and after
| Situation | How it goes now | With this in place |
|---|---|---|
| Getting up at night | Feeling for the floor, or a harsh ceiling light | A dim glow appears at floor level |
| A normal trip | Nobody knows, and nobody needs to | Still nobody is told |
| A fall in the bathroom | Possibly not found until morning | Somebody is told in fifteen minutes |
| Family out of town | Can only phone and ask | Hears only when it is real |
| Privacy | A camera is the only way to see | No footage exists at any point |
What you need on hand
Home Assistant treats every device in the house as an "entity". The brand and model do not matter. What matters is which class it falls into, and this setup needs very few.
| Job | Class it belongs to | Required? |
|---|---|---|
| Know if the bed is occupied | binary_sensor bed mat, or room presence | Yes |
| Bedside guide light | light lamp | Yes |
| Get the message to a phone | notify phone app | Yes |
| Hallway and bathroom light | light lamp | Nice to have |
| Know she reached the bathroom | binary_sensor presence | Nice to have |
A bed mat is a thin strip that lies under the mattress. Weight on it means occupied, weight off means empty. She will not feel it is there, and nothing has to be worn on the body, which matters more than it sounds. Anything that has to be remembered and put on tends, in the end, not to be put on.
How the system is put together
Broken apart, it is three separate lines that never interfere with each other.
Use a ready-made blueprint for the judgement in the middle
The hub ships with a set of tested automation blueprints. Think of a blueprint as a fill-in-the-blanks form: the boxes are already drawn, you only supply the content. This setup uses three of them, and the pivotal one is binary_sensor_trigger_things, which exists precisely to handle "this sensor entered this state, held it for this long, so do this".
| Box to fill | What goes in it | Suggested |
|---|---|---|
| Which sensor to watch | The bed mat, or room presence | — |
| Which state counts | Occupied turning to empty | — |
| How long before counting | Ignores turning over or sitting on the edge | 2 min |
| Which hours it applies | Daytime movement is nobody's business | 22:00 to 06:00 |
| What it does | Holds the fact, lets the notify line wait | — |
The notification line runs on entity_state_trigger_notify, whose whole job is to say "this state has held longer than the threshold, so tell this person" — one at fifteen minutes, one at twenty-five. The lighting line runs on binary_sensor_trigger_light: on when the bed empties, off on a delay after the return. You only fill in the lamp and the brightness.
Different homes, different numbers
Those are general defaults. If the layout or the habits differ, adjust along these lines.
| Your situation | Normal window | First alert | Second alert |
|---|---|---|---|
| Ensuite bathroom, short walk | 5 to 10 min | 12 min | 20 min |
| Typical layout, just outside the door | 8 to 12 min | 15 min | 25 min |
| Has to cross the living room | 10 to 15 min | 20 min | 30 min |
| Light sleeper, up and about at night | 10 to 18 min | 25 min | 35 min |
| Limited mobility, uses a walker | 10 to 15 min | 18 min | 25 min |
Two optional extras
| What you want | Blueprint | What it does |
|---|---|---|
| Light along the whole route | binary_sensor_trigger_light | One instance each for the hallway and the bathroom, so light appears where she is and fades three minutes after she leaves |
| Know if the sensor dies | entity_state_trigger_notify | If the bed mat has not changed state for thirty-six hours straight, it messages you to go and check. Usually a flat battery or a dropped connection |
You do not have to set this up yourself. Just say it
The WOOWTECH smart hub ships with HA-MCP installed, so an assistant can connect straight into your system, do the work, and then go back and check that it really runs. It will not hand you a pile of configuration to paste in.
Prompts you can copy straight out
Every block below can be copied whole, using the button on the right. Pick the one closest to what you need. You do not have to use them all.
Set up an out-of-bed reminder in my mother's room. When the bed reads empty, turn the bedside lamp on at its dimmest warm setting. If fifteen minutes pass without her back in bed, send me a push notification.
Build a night-time out-of-bed setup in my mother's room, active only between 10pm and 6am. When the bed reads empty, put the bedside lamp on at 5% warm white, and turn it off two minutes after she is back in bed. The bed must read empty for 2 minutes before the clock starts, so turning over or sitting on the edge does not count. Back in bed within 8 to 12 minutes is normal. Tell nobody. Past 15 minutes, push to the family living in the house, with the time she got up and the elapsed minutes in the message. Past 25 minutes, push to the family living out of town. One message each per trip, no repeats. No camera, no spoken announcement, all alerts go to phones as push notifications. Do not add any do-not-disturb or quiet-hours condition to it. Once it is built, test it yourself, confirm it really works, and then tell me which devices you used.
In our house she has to cross the living room to reach the bathroom, so the walk is longer. Widen the normal return window to 15 minutes, move the first alert to 20 minutes and the second one to 30 minutes. Also light the living room and the hallway on the way, at the dimmest warm setting, coming on as she passes and fading out three minutes after she has gone.
That out-of-bed reminder you set up last week is too sensitive. My mother sits on the edge of the bed reading and it counts that as being up. Change the hold time before the clock starts to 3 minutes, and move the first alert from 15 minutes to 20. Leave the rest alone.
Start with one thing. Send a test push to my phone right now so I can see whether it lands. If it arrives, work backwards one link at a time. Has the bed sensor been reporting normally these past few days? Was my phone on do not disturb, or with notifications switched off, at the moment the reminder was due to go out? Report back after each link instead of saving it all up until the end.
Common questions
No bed mat. Can I use something else?
Does sitting on the edge of the bed count as getting up?
It keeps waking me at night
She says it feels like being watched
Two people share the bed
What about a power cut or an internet outage?
A month from now
Your phone has barely made a sound. That does not mean the system did nothing. It means that every single time she got up in the night this month, she made it safely back to bed.
And you finally slept through until morning.