| First impression | Visible alarm hardware and a loud siren. | A realistic barking cue that suggests an occupied property. |
| Before entry | Often reacts when the alarm is triggered at the device zone. | Motion sensor can be aimed at the approach before the door is reached. |
| Intruder psychology | The person hears an obvious alarm sound. | The person has to consider whether someone and a dog are inside. |
| Power and setup | Solar charging can be useful outdoors, but placement depends on sun and weather exposure. | Indoor or protected placement with USB or battery power options. |
| Best fit | Large visible perimeter noise or a secondary outdoor layer. | Front doors, garages, sheds, rentals and entries where an occupied-property cue matters. |