ACR OLAS Exposure Series GuardianOLAS Exposure Series Guardian The EXPOSURE OLAS Guardian is a small wireless engine kill switch that acts within two seconds of a person going overboard. It has the dual function of also acting as an instant Man Overboard (MOB) alarm system. The Guardian simply connects with up to 25 OLAS transmitters and can cover a vessel up to 50 feet. In the Box Guardian, OLAS Tag + Battery, Power Connection wires, Kill Cord connection wires, Stainless steel