Well Designed - Say goodbye to your huge motion detector. This motion sensor has an incredibly thin profile with a thickness of only 1 inch. This unconventional ultra-thin motion sensor can be installed anywhere you need, small and easy to install. Infrared detection technology - Use infrared signals to detect moving objects. It does not produce significant heat and is extremely energy efficient. Full detection capability - 110 degree detection with 7m detection range (diameter, without obstacle). Easy to use and app - Our motion sensor requires no subscription service and requires no hub. In the app, you will receive a notification of any alerts. It also lets you keep an eye on the device's battery level to ensure the alarm sensor never runs out. Standby time - 5 years long battery life, 2500 times trigger(1 year if trigger 7 times per day, 2 years if trigger 3 times per day). After-sales service, Please contact if you have any questions.