1~10PCS Smart Home Integration Compact Design Wireless Connectivity Energy-saving Smart Security And Energy Savings Description: Yi Weilian Human Infrared Sensor: An Intelligent Guard for Home Safety Product features: Human body sensing: High sensitivity infrared sensors are used to accurately detect human activities and effectively avoid false alarms. Real time alarm: Once human activity is detected, alarm information is immediately pushed through Yiweilian app, allowing you to stay informed of the dynamics at home at any time. Intelligent learning: With intelligent learning function, it can recognize the activity habits of family members and gradually improve sensing accuracy. Energy saving and environmental protection: Low power design, long standby time, saving energy for you. Easy to install: No wiring required, can be easily installed in areas that require monitoring. Strong compatibility: Perfectly integrated with the Yiweilian smart home ecosystem, achieving linkage control of smart devices. Privacy protection: With masking function, it can be manually or scheduled to ensure your privacy and security. Real time synchronization: Through the Yiweilian app, you can view sensor status, historical records, and other information at any time, ensuring your home safety is at your fingertips. Specifications: USB input: DC5V/2A Input voltage: DC3V LR03 Static current: 35uA Alarm current: 15mA Low voltage and undervoltage: 2.4V operating frequency: 2.400GHz -2.484GHz Detection distance: 6m Inspection angle: 360 degree ceiling installation Working temperature: 10 ~50 Working humidity: maximum 95% RH Package Included: 1 * (1 sensor)