CrewWatcher MOB Alarm Published on May 2, 2018; last updated on February 28, 2022 by Carolyn ShearlockUnfortunately, the CrewWatcher MOB Alarm is no longer available. I recommend the MOB AIS/DSC Locator and Alarm instead. Find this helpful? Share and save: 512 Shares Facebook 406 Pinterest 106 Email 0 Text 0 WhatsApp 0 More Some links above (including all Amazon links) are affiliate links, meaning that I earn from qualifying purchases. Learn more.