Screaming Meanie 220 12v battery operated portable alarm clocks wake the heaviest sleepers. Screaming Meanies were originally developed for
truckers. Three volume settings include 70 dB, 90 dB, and extremely loud 120 dB that guarantees you’ll hear it. The Continuous Alarm will not time out and requires two hands to turn off. Back-lit Display, Low Battery Tester, Panic Alarm, and Audio Locater Beacon.