The Gizmo Engineering DL Series is a series of low level drum alarms that can alert the user when liquid level in their container is low. The liquid suction tube is permanently attached to the alarm unit, providing continuous monitoring. It is battery powered, allowing the user to take it anywhere and eliminating the need for power outlets. The lithium battery provided has a life span of about 10 years, or can provide up to 50 hours of continuous alarming. Gizmo's drum alarms are ideal for rough, wet, and corrosive environments, as the alarms contain no metal parts.

There is an intake screen on the pipes to prevent debris or other materials from entering the pipes. Users can adjust the pipe depth using a thumbscrew, allowing use for containers as small as one gallon to even large tanks. The maximum depth of the pipe can reach 890mm. There are various mounting styles available to fit a user's needs, including a slip cap or a plug. Additionally, the secure compression tubing connection eliminates the possibility of air leakage into feed lines.