[ Reliable Motion Detector Alarm ] This motion sensor features high sensitivity with a detection distance of up to 39 ft and a 110-degree viewing angle. It emits a loud 110dB alarm and includes two detection windows to minimize blind spots. Install at a height of 6.5 ft using the included screws to activate the alarm when motion is detected indoors. The sensor is designed to reduce false alarms from pets weighing under 15 kg (33 lbs), such as cats and dogs. [ Remote Control via Phone App ] The motion sensor can trigger an alarm locally and connect to a smartphone app, allowing you to receive alarm notifications and manage the device remotely. The app offers multiple functions, including 4 operation modes (including SECRET mode), 7-day event history, adjustable alarm duration, and scheduled operation times. [ USB Power Operation ] This sensor operates via AC power using a USB connection, eliminating concerns about battery life. Compatible with a DC 5V 1A power adapter. [ Expandable System with Custom Naming ] The system supports multiple sensors for expanded coverage and can connect to several smartphones, enhancing security for homes and properties. Ideal for use in rooms, garages, basements, or covered gates. Each sensor can be named according to its location, enabling clear identification of the triggered sensor when an alert is received on the app.