A device intended to provide visual information on safety warnings, e.g., biological, chemical, radioactive and/or other hazardous or potentially hazardous conditions within a healthcare facility. A sign will typically be manufactured using words, letters, symbols, and/or pictures to convey the information content (e.g., "X-ray in use", "Radiation", "Isolation room", "Pressurized gas"). It is used throughout healthcare facilities to provide visual information on safety to staff, patients, and/or visitors.