For many families, the hardest thing isn’t finding a care solution — it’s persuading a loved one to accept one. SecondSyt’s monitoring system is different. It works entirely in the background, requires no change in behaviour, and keeps no cameras indoors. Your relative lives exactly as they always have. You simply know they’re okay.
How it works
The system uses small, unobtrusive sensors placed around the home — on a fridge door, a back door, in a hallway or kitchen — to build a picture of normal daily activity. When that pattern changes, the system notices.
If activity drops below what would be expected — or if the system detects a prolonged presence in one location that could indicate a fall — it first gives your relative a chance to confirm they’re okay. If no confirmation comes within a few minutes, it sends an alert to everyone on the family contact list by text or email.
There are no cameras. No microphones. No wearables to charge or forget. The person being monitored doesn’t have to do anything differently at all.
What we monitor
- Door activity — fridge, back door, front door
- Room presence — using passive sensors that detect movement and occupancy
- Stairwell monitoring — to detect a potential fall
- General activity patterns — TV use, internet activity
- Doorbell activity
Tested over six months
The SecondSyt monitoring system has been running continuously at a real home in the Cotswolds since late 2024. In six months of operation:
- No batteries have needed replacing
- The system has remained remarkably stable through frequent remote software updates
- The resident — who was clear he wanted no cameras in his home — has been comfortable throughout
- Family members have had genuine peace of mind without any intrusion on daily life
This is a real trial, not a demonstration. The data and experience behind what we offer is genuine.
The technology behind it
The system is built on Home Assistant — the world’s most widely used open-source home automation platform — with Nabu Casa providing secure remote access. All data stays within the home. Nothing is shared with third parties.
Sensors
Tapo magnetic door sensors monitor entry points. Aqara presence sensors detect room occupancy and movement — without cameras, without recording.
Local intelligence
All monitoring and decision-making happens locally on a small device in the home. It doesn’t rely on a cloud service to decide whether something is wrong.
Family alerts
When the system decides something needs attention, it contacts everyone on an agreed list — by text or email — simultaneously. No single point of contact to miss a message.
Voice confirmation
Before alerting the family, the system gives the resident a gentle prompt via a smart speaker — a simple opportunity to confirm they’re fine before the alert goes out.
Honest answers to the questions families ask
What if the batteries run out?
The sensors report their own battery levels to the system. In six months of real-world use, no batteries have needed replacing. We’ll set up alerts if any sensor battery drops low, and we’ll talk you through what to do.
What if the internet goes down?
Local monitoring continues without internet — the system keeps watching. Remote alerts and family notifications do require connectivity, so internet reliability is something we discuss during setup. We’re also developing a heartbeat monitor to flag connectivity issues proactively.
What if the system crashes?
Home Assistant has proven exceptionally stable in our trial — running continuously through frequent updates without failure. That said, no system is infallible, which is why we’re honest about this and build in safeguards where we can.
Will Mum/Dad accept it?
This is usually the hardest part. Because there are no cameras and nothing to wear or interact with, most people are comfortable once they understand how it works. We always involve the person being monitored in the conversation — their comfort matters as much as your peace of mind.
Let’s have a conversation
Every family’s situation is different. Tell me what you’re worried about and I’ll tell you honestly whether this system would help — and what it would involve to set up.
Core installation — one-off
Includes: Raspberry Pi 5 hub · Zigbee door & fridge sensors ×2 · Aqara FP2 presence sensor · Home Assistant Voice PE speaker · Automations, dashboard & family setup