Large Area Detection, Real-Time App Notifications, Wireless Home Security, And A Note: No hub required, 2.4GHz Wi-Fi network only. Wifi PIR motion detector sensor via "Tuya" or "Smart Life" APP. Real-time and Remote Alarm: When the motion sensor is armed and detects movement, it sends alarm information to the mobile APP. real-time monitoring of human infrared signals to protect you and your family. Stable and Reliable: Automatically adjust the threshold, improve the stability of the infrared presence sensor, and effectively prevent false alarms and interference caused by temperature changes. (Detection distance: Max 9M under 25C, will be different depending on environmental temperature, Detection angle: 90) Pet Interference Prevention: When the alarm is installed at the recommended altitude, the detector will not alarm when pets less than 11 kg pass by. Long Battery Life: No need to drill for installation, just stick and useprevent your walls from damage. This sensor with energy efficient battery (1 x CR17335/CR123A included) provides 5 years under normal use.