The SM4U High Voltage Warning Sign is made of polished acrylic steel and affixed with a black, waterproof plastic sticker. This warning sign is essential for any work environment or industrial facility where electrical hazards exist. Its clear and legible design displays the words "Danger" and "High Voltage" in bold, prominent letters to ensure visibility from a distance. The sign's durable and long-lasting material makes it suitable for both indoor and outdoor use. The black, waterproof plastic sticker ensures the sign remains in excellent condition even in humid or changing conditions. Easy to install, it can be affixed to walls, doors, or electrical equipment to alert workers and visitors to potential hazards. This sign helps maintain a safe working environment and comply with occupational safety standards.