; and (B) serves no legitimate purpose. (7) Alarm The term alarm means a mechanical, electrical, or electronic device that does not rely upon an employee’s vocalization in order to alert others. (8) Dangerous weapon The term dangerous weapon means an instrument capable of inflicting death or serious bodily injury, without regard to whether such instrument was designed for that purpose. (9) Engineering controls (A) In general The term engineering controls means an aspect of the built space or a device that removes a hazard from the workplace or creates a barrier between a covered employee and the hazard. (B) Inclusions For purposes of reducing workplace violence hazards, the term engineering controls includes electronic access controls to employee occupied areas, weapon detectors (installed or handheld), enclosed work­stations with shatter-resistant glass, deep service counters, separate rooms or areas for high-risk patients, locks on doors, removing access to or securing items that could be used as weapons, furniture affixed to the floor, opaque glass in patient rooms (which protects privacy, but allows the health care provider to see where the patient is before entering the room), closed-circuit television monitoring and video recording, sight-aids, and personal alarm devices. (10) Environmental risk factors (A) In general The term environmental risk factors means factors in the covered facility or area in which a covered service is performed that may contribute to the likelihood or severity of a workplace violence incident. (B) Clarification Environmental risk factors may be associated with the specific task being performed or the work area, such as working in an isolated area, poor illumination or blocked visibility, and lack of physical barriers between individuals and persons at risk of committing workplace violence. (11) Patient-specific risk factors The term patient-specific risk factors means factors specific to a patient that may increase the likelihood or severity of a workplace violence incident,