The Security Camera responds to surrounding objects using sensitive sensors. It can stand guard residence, parking lot,market, and factory at a corner, which is regarded as a true camera effectively.When somedody walk across, the camera move left and right. simple and convenient installation: 1.Open battery cover and place two 1.5v "AA"size batteries in product. 2.Connet A/C, which is transformed to 3vDC. 3.Intall the product in a suitable place fixed by attached screw fastener.