Feature:1. Support 2.4G WiFi, 802.11b/g/n wireless network, more convenient to use, bring you advantages.2. After the human body motion is detected, the message is pushed to the mobile APP for smarter use.3. Can be installed on the ceiling with a 360° detection angle, and it can be installed on the wall.4. Can be used with other for TUYA products (not included), suitable for residences, office spaces, warehouses, shopping malls, etc.5. Can be powered by USB or 2pcs LR03 batteries (not included). LR03 cannot be charged by USB.Specification:Item Type: PIR Motion SensorMaterial: ABSUSB Input Voltage: DC5V 2A (USB cannot use dry batteries, only rechargeable batteries, batteries are not included)Battery: 2pcs LR03, DC3V 790mAh (not included)Standby Current: ≤75uAAlarm Current: ≤60mALow Voltage Notification: ≤2.2VWireless Network: 802.11b/g/nDetection Distance: Approx. 6m/20ftDetection Angle: 360° Ceiling installationInstallation Method: Ceiling, wallWorking Temperature: -10 to 50°℃Working Humidity: ≤95%RHPurpose: Infrared detector, human body detection, intelligent linkage alarm.Package List:1 x Detector2 x Screw2 x Plastic Pillar1 x Pin1 x Sticker1 x Manual Note:1. Please leave the device for more than 30 seconds, and then move your body closer to the device to test. The indicator light is on and the APP receives a message indicating that the test is successful.2. If someone always moves within the detection area of the PIR sensor, it will only detect once.