Safety is the #1 priority for Protection One (P-One). The company provides security alarm monitoring services to about 1.5 million US customers. Its alarm systems are designed to detect intrusions, smoke, and fire. P-One offers access and remote entry systems in addition to its traditional security offerings. The company provides constant monitoring services from two facilities located in the US; it also serves customers through some 60 field offices. P-One's business is conducted through three segments: retail (homes and businesses), wholesale (independent alarm companies), and multifamily (apartments and condos). Chicago-based private equity firm GTCR Golder Rauner acquired P-One in mid-2010.