https://developer.haltian.io/haltian-iot/concepts/device-groups/Recent content in Device Groups on Haltian Developer DocumentationHugoen-ushttps://developer.haltian.io/haltian-iot/concepts/device-groups/composition/Mon, 01 Jan 0001 00:00:00 +0000https://developer.haltian.io/haltian-iot/concepts/device-groups/composition/<h2 id="overview">Overview</h2> <p>The behavior of a device group depends on which sensor types it contains. The Occupancy Data Engine recognizes three composition scenarios, each with its own occupancy logic and reset behavior.</p> <p>Choose the composition that matches your space and sensors:</p> <table> <thead> <tr> <th>Composition</th> <th>Sensors</th> <th>What you get</th> <th>Best for</th> </tr> </thead> <tbody> <tr> <td><strong>Entryway only</strong></td> <td>1+ Entryway sensors</td> <td>People count (entries/exits)</td> <td>Rooms with controlled doorways</td> </tr> <tr> <td><strong>Presence only</strong></td> <td>1+ Presence sensors</td> <td>Occupied / not occupied</td> <td>Open areas, desks, small rooms</td> </tr> <tr> <td><strong>Mixed</strong></td> <td>Entryway + Presence sensors</td> <td>People count + validated occupancy</td> <td>Large rooms needing both count accuracy and presence confirmation</td> </tr> </tbody> </table> <h2 id="entryway-only">Entryway Only</h2> <p>A device group with one or more Entryway sensors and no Presence sensors.</p>