Highly visible red, black, and white design is sure "Security Alert 24 Hour Video surveillance All Activities are Monitored & Recorded Sign" to catch the attention of possible intruders 10 x 10 inch, made of strong rust-free 0.40 aluminum, Heavy aluminum sign sturdy and strong Graphics and paint will withstand the outdoor elements and will not fade, Outdoor service life up to 7 years. 4 pre-drilled holes for easy mounting on every surface including walls, fencepoles and gates. Reflective Signs Are Hard to Ignore, Reflective signs illuminate when struck by light from headlights or any other source. This makes the message readable even in dark and low lighting. ( but it can Not glow as bright as LED lights )