OSHA Danger Safety Sign: High Voltage - Keep Away. Prevent electrical injuries by warning others to keep away from high voltage areas. Available in two languages (English and Spanish) and 3 three sizes to suit all application needs. Available in eight materials, including Dura-Vinyl™ which is ideal for both indoor and outdoor applications. Traditional OSHA-style signs, tags and labels are the most widely recognized design format in the industry. Danger header indicates a hazardous situation that, if not avoided, will result in death or serious injury.