Presence detection means your home automatically “knows” whether someone is there – and reacts accordingly. It uses motion sensors, door/window contacts or your smartphone. If your smart home detects your presence, lights switch on, the heating gets cozy, or music starts automatically. When you leave, the system turns off unnecessary loads, lowers the temperature and activates the alarm. The core idea: raise comfort and security automatically while saving energy at the same time.
A smart presence setup quietly takes care of dozens of small tasks in daily life. The home reacts to presence and recognizes when you are away. It then decides automatically when it makes sense to run lights, heating or AC - and when not.
That saves energy, lowers costs and makes everyday life more relaxed. You can forget questions like,“Is the hallway light still on?” or “Did I turn the heating down?” Besides automatic presence detection, many functions can also be controlled by voice command.
Burglary protection is a major aspect of presence detection. If the system sees that everyone is away, roller shutters can lower automatically and lights switch on at varying times to simulate real presence. If motion is detected at home despite absence, the system can send an alert, trigger a siren or activate cameras. Of course, “away” scenes can also be activated via app, button or Wall Display.
Pure motion detection only reacts to “action”, visible movement. Presence goes a step further: it senses that someone is there even if nobody is walking around or gesturing. With simple motion sensors the following happens quickly: you sit quietly on the sofa, read or focus on your laptop, and, suddenly, the light turns off because you have not moved enough. Annoying, it often leads to overly sensitive sensor settings that cause false triggers and wasted light.
Presence sensors register micro-movements or mere presence. That means:
In short: motion detection sees that something happens. Presence recognizes that someone is there.
Shelly Presence Gen4 goes beyond classic motion sensors. It recognizes if a person is actually in the room, even when they are just reading, working or watching a movie. Instead of switching lights or heating off after a rigid timer, everything stays active exactly as long as the room is used. No more “lights off – wave arms – lights on” moments; automations feel natural. Presence Gen4 can detect up to six people simultaneously. How you map presence detection to rooms or scenes in the app is entirely up to you.
Shelly BLU Motion is ideal where classic motion detection makes sense: it reliably registers movement and starts the right automations – hallway lights when someone passes, or a welcome scene when you come home. Corridors are lit automatically, routines start comfortably, or a light switches on briefly without touching a switch. Thanks to its alert eye, BLU Motion also supports burglary protection when you are away.
Shelly Presence Gen4 goes beyond classic motion sensors. It recognizes if a person is actually in the room, even when they are just reading, working or watching a movie. Instead of switching lights or heating off after a rigid timer, everything stays active exactly as long as the room is used. No more “lights off – wave arms – lights on” moments; automations feel natural. Presence Gen4 can detect up to six people simultaneously. How you map presence detection to rooms or scenes in the app is entirely up to you.
Shelly BLU Motion is ideal where classic motion detection makes sense: it reliably registers movement and starts the right automations – hallway lights when someone passes, or a welcome scene when you come home. Corridors are lit automatically, routines start comfortably, or a light switches on briefly without touching a switch. Thanks to its alert eye, BLU Motion also supports burglary protection when you are away.
With defined zones you control lighting very precisely: instead of lighting the entire room, the light turns on only where someone is – at the desk, on the sofa or in the hallway. Flexible “light islands” adapt to daily life: bright where you live or work, dark where nobody is. You can also assign different brightness levels or color temperatures per zone. Comfort and atmosphere go up while energy use goes down, because almost no unnecessary light is left on.
The BLU Door/Window ZB sensor is a key component of presence detection: when the front door opens, the system infers that you have arrived and reacts accordingly. The hallway lights turn on, your preferred temperature is set, and the alarm mode is deactivated. In combination with more sensors and smart mapping, you can build coherent presence logic. By voice command you can also ask whether doors and windows are closed or whether burglary protection is already active.
In combination with the LOQED Smart Lock you can leverage Shelly’s presence detection cleverly. When the front door is unlocked via LOQED, the Shelly smart home gets an unambiguous signal: you are here. Via mapping in the app, suitable scenes then start automatically – either for presence or for leaving the home. Result: more comfort and security, automatically.
Automations turn presence detection into a super-tool. If the system detects your presence, suitable scenes can start automatically: lights switch on exactly where needed, heating goes to comfort temperature and your favorite playlist may already be playing quietly. If you are away, the opposite happens: lights turn off, standby devices are disconnected, heating moves to eco mode and the alarm takes over. The daily routine aligns itself to you - more comfort, more security, less waste.
In Beacon Mode, your smartphone or a Shelly BLU device sends a Bluetooth signal that the smart home detects to trigger scenes automatically – without geofence or Wi-Fi changeover.
In the app you define schedules and random timings that switch lamps, shutters or sockets at varying times so the home looks occupied – even when you are away.
Many systems do. Shelly stands out with a broad range of sensors/actuators, easy setup and open interfaces.
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