Material: 24 Hour Video Surveillance Sign Aluminum Reflective Signs are crafted from aluminum which makes it lightweight, durable and corrosion resistant. The aluminum material also has good weather resistance and can be used for a long time in indoor and outdoor environments. Graphics and Text: A camera graphic is printed on the warning signs to indicate that this location is under surveillance. In addition, there will be a variety of color combinations, 24-hour uninterrupted camera and other words on the sign to clearly convey the warning message. Reflective features: no trespassing video surveillance sign is made of high-strength reflective film. When it is illuminated by light, it can produce a strong reflection effect and improve the visibility of the logo. This is very important for alerting pedestrians and drivers at night or in low light conditions. Design concept and size: This surveillance warning reflective sign is 9.7*7 inches, 2 packs, suitable for different use environments and requirements. The warning sign features a bold red, black, white and yellow design that is sure to catch the eye of anyone looking to approach their private grounds. INSTALLATION:Security camera sign is designed with pre-drilled holes for easy mounting on walls, fences or brackets. When installing, you can use screws, nuts or other fixings to fix the signage to ensure it is firm and stable.(installation accessories are provided by yourself)