A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors.
Recruitment (hiring) is a core function of human resource management. It is the first step of appointment. Recruitment refers to the overall process of attracting, shortlisting, selecting and appointing suitable candidates for jobs (either permanent or temporary) within an organization.
A recruitment policy governs the way an employer attempts to fill vacant staff positions. Most large companies have some form of recruitment policy in place that complies with employment laws, and also provides the company with a cost-efficient method to quickly replace outgoing employees. Major firms typically have hiring policies in place that all human resources personnel and hiring managers must abide by.