This product is a professional and practical infrared with reasonable design and practical functions, which can safely and reliably protect your home. It is made of excellent craftsmanship and has a reasonable structure, which can supports most installation methods. Features -Color: White. -Material: ABS. -Size: About 9.00X4.40X4.00cm/3.54X1.73X1.57in. -Working voltage: 5V. -Standby current: 20ma. -USB voltage: DC5V. -Alarm current: <=60mA. -Battery: 2 x AAA batteries (not included). -Selection angle: 360° left and right, 120° up and down. - : IEEE 802.11 b 2.4GHZ. -Alarm sound: &gt;80db. -Working temperature: - centigrade~+50 degree centigrade. - Sound and light alarm, full of shocking. Long distance and wide sensing area. - Control the security situation at home through the mobile APP, so that you can easily control it even when you go out! - Place it as you want, place it at will or fix it with screws, and support multiple methods to install such as flat placement and wall fixing. - The two power supply methods, can use AAA batteries (not included), or plug-in use, which is convenient for you, and you can choose. - Intelligent identification, pet immunity, prevent false alarms that caused by the small pets, pets weighing less than 25KG. Package list: 1 x Alarm