Supports 2 working modes and can be installed as a welcome device at the store entrance. It can also be used as an infrared alarm and installed for anti-theft purposes. Wide detection angle: 110 ° detection range. A wide detection angle makes it easier to capture intruders. Dual-mode power supply: Supports battery and USB cable power supply. It is also possible to use two power supply modes at the same time, and switch to battery power supply after power outage, without worrying about the equipment stopping working due to power outage., Manufacturer: Ounfhtrttk