Bat-1B Level Alarm 9V for MVE TanksLow Level Alarm for Aluminum Dewars A low level alarm for Aluminum dewars that is designed to alert when the level in the dewar is getting low. The Low Level Alarms include a probe that is inserted through the neck and placed at a user designed level. When the level of the LN2 goes below the probe, the alarm will sound. The Bat 1B alarm uses a 9V battery for power. Features Weak battery detected by visual and audible alarms (Unit will "beep" and flash
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