Will My Dog Set Off My Alarm? The Truth About Pet-Friendly Security

Sensitivity Settings: Many sensors have a physical dial or software setting for sensitivity. If it’s set to "High," it might pick up the heat plume rising from a large dog’s back, even if the body itself is below the threshold. Turn it down to "Low" or "Pet Mode."
Reflections: Mirrors, shiny floors, or glass doors can reflect infrared heat. If your dog walks past a mirror, the sensor might see two dogs instead of one, doubling the signal strength and triggering the alarm. Cover reflective surfaces near sensors or adjust the angle.
Air Currents: Did you leave a fan on? Or is there a draft from an open window? Sometimes, rapid air movement combined with a pet’s presence can create erratic signals. Ensure vents aren’t blowing directly into the sensor’s face.

Dog Weight 50 lbs Most standard sensors are immune up to 40lbs (18kg).