ACR OLAS Exposure Series Extender [EXPOLASEXTENDER]OLAS Exposure Series Extender The OLAS Extender is a compact, portable, wireless repeater for the OLAS N2K NMEA 2000 MOB Alarm and Wireless Kill Switch, the OLAS Guardian MOB Alarm and Wireless Kill Switch, and the OLAS Core MOB alarm system. While the OLAS Tag, T2, and OLAS Float On used alone with the mobile app allow for coverage on vessels up to 40ft, the N2K, Guardian, and Core allow for coverage on vessels up to 50ft, the Extender can be used