Smart Infrared Sensing: It is equipped with a high - sensitivity sensor featuring a 120° wide - angle detection range. This sensor can accurately detect human activities within 9.84 - 19.69ft. Once detected, it immediately activates the sound and light alarms, which automatically silences 15 seconds after the target leaves, providing round High - decibel Alarms : The Alarms can reach up to 120 dB, with strong penetrating power. In emergency situations, it can quickly intimidate intruders and effectively ensure safety.Equipped with a tuning switch, the tuning range is: mute - 120 dB. Energy - efficient LED Bulbs: While emitting a high - volume alarms, it is equipped with high - brightness LED energy - efficient bulbs. These bulbs light up and rotate for illumination simultaneously when the alarms is triggered. Flexible Installation: This device requires no wiring. It comes with an AC plug, allowing you to easily insert or remove the mobile device base by hand. With the base screws, you can quickly fix and install it on walls, in warehouses, on balconies, at doorways and other locations Multi - scenario Application: With an IP65 - rated protective design, it can withstand harsh weather conditions. This product can be stably used in complex environments such as courtyards, construction sites, computer rooms and warehouses for a long time, providing comprehensive security protection for homes, commercial places and outdoor areas. Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines and so on. Voltage: AC110V Color: White and Red Material: plastic Package Contents: 1 alarm device