The Laerdal Suction Unit is the only suction unit on the market today with the capacity to determine and display its readiness for use. It can test for occlusions, vacuum efficiency, maximum vacuum attainable, battery charge, system leakage and status. With the LSU, you can count on delivering the best patient care every time. The LSU features an industry-first device diagnostics system, and an integrated vacuum regulator/power knob. It's all arranged in a rugged bump-proof/splash case design and it operates very quietly. The compact and affordable choice for the most extreme situations, the Laerdal Suction Unit is the result of more than 30 years of airway management experience. The unit includes disposable canister, patient tubing, AC and DC cords, battery and directions for use.