Wifi Motion Sensor with Message Alerts will alert you when movement is detected. Easily turn off any appliance that has been left powered on when no motion is detected. Trigger Simple Home Products to turn on when motion is detected. Remotely monitor movement inside your home; Uses passive infrared sensors (PIR) to detect motion up to 15 feet away; Alerts you when motion is detected with push notifications; Can trigger other Simple Home products to turn on when motion is detected; Save money and conserve energy by having devices turn on only when motion is detected; Small unobtrusive design blends in seamlessly into any environment; No hub required, works off your existing wifi network.