OLAS Core Portable Wireless Overboard AlarmThe Core is a compact, portable overboard alarm and emergency light system. It reacts within 2 seconds of a person falling overboard and can easily be switched between vessels without the time and cost of wired instillation. The Core can connect with up to 25 OLAS transmitters and cover a vessel up to 50ft. This system is indispensable for users boarding vessels without installed overboard alarm systems, such as charter trips or short handed vessel