Feature: 1. 24GHz Microwave Radar Chip: This human body presence sensor utilizes a 24GHz microwave radar chip, which is not affected by environmental temperatures or interferences from heat sources, light sources, or airflow. 2. Penetrates Insulating Materials: This smart motion sensor can penetrate insulating materials such as fabric, plastic, and glass, allowing it to detect motion through barriers and provide enhanced security in different settings. 3. Portable Design: Designed to be and compact, this human body exist detector is easy to carry and install. It can also be seamlessly integrated with other smart devices, allowing for versatile usage and customization according to different scenarios. 4. Stable Wired Design: Powered by a stable wired connection, this smart human presence sensor ensures consistent power supply, eliminating the need for frequent battery changes or concerns about battery life. 5. 30-Day Recording: This human body exists sensor offers the ability to view 30 days' worth of recorded data related to human presence and light levels, providing valuable for security monitoring and adjusting lighting settings. Specification: Model Number: Human Body Presence Sensor Power supply: 5V - 1A Power Consumption: 0.5W Communication protocol: ZigBee Radar frequency: 24GHz-24.25GHz Photosensitive range: 0-10000 Working temperature: -10~40 Working humidity: 0-95%RH, non-condensing Note: ZigBee gateway is required! Material: plastic colour: White Package Contents: 1 x Human Presence Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.