App Remote Control: Just download the "Smart Life / Tuya" app on iOS or Android to add the motion sensor device, no hub needed. Home security always in hand.Advanced motion sensor: The PIR detects the movements of humans and animals, with a detection angle of 120, a detection distance of 5 m, monitoring in real time possible day or night.Emergency alert function: When motion is detected, alerts will be sent to the phone, to know what is happening at your home even when you are on the go.Voice control and history tracking: Compatible with Google Home. Simply use your voice to control connected devices. You can track the activity history of the sensors.High performance and ultra-long standby time: long transmission distance, high sensitivity and strong network signal. Super long standby time. Powered by 3 x 1.5V batteries (included), can last 3-5 months.