Plunger emits an audible warning to the user and others, in the case of a vacuum loss.
Deep, concave pad for easy attachment on curved or irregular nonporous surfaces.
(Not for use on thin, fragile materials.)
Red-line indicator provides user with visual warning of any vacuum loss.
Low Vacuum Audio Alarm supplements visible red-line indicator with audible indicator, increasing peace of mind in circumstances that make it difficult to monitor the visual indicator.
Advanced design automatically turns Audio Alarm on or off as necessary, eliminating power switch, increasing battery life and simplifying operation, as compared to competitors' products.
Comes complete with long-lasting, easy-to-replace AAA battery, to power Audio Alarm.
Check valve allows repumping without loss of remaining vacuum.
Release valve lever permits quick and complete release.