This next generation motion detector has a clean and modern silhouette with a classic UFO shape The body housing is made with premium polycarbonate material stronger than ABS plastic and gives a beautiful smooth finish Standard white low profile allows this sensor to blend seamlessly into your ceiling Our microwave sensor emits microwave signals to detect moving object the same way a radar speed detector works It is more accurate and consistently outperforms a PIR motion sensor which tends to be less sensitive in high temperature and over sensitive in low temperature Features 360degree detection with 30ft diameter detection range Radar waves are capable of penetrating glass paper plastic and thin walls Compared with a PIR motion sensor a radar motion detector is less likely to be limited by place of installation and could detect objects before they see the sensor With built in photocell operated by switch for daylight 247 mode or night mode only trigger after dark making the sensor a perfect replacement of PIR sensors This sensor emits microwave power at 10 milliwatt which is 1100 of a normal cell phone typically 12 watts of power Suggested install height is 812 ft compared to a cellphone which is normally used within 3 ft of your body You can use this radar motion detector safely and with peace of mind