Precision Medical, PM3300DHV, PM3300 Series Continuous & Intermittent 3 Mode Vacuum Regulator, Digital Mode, High Range Vacuum Gauge, 1/8" NPT Female Source Connection, 1/8" NPT Female Patient ConnectionFeatures:Factory preset timing cycles set at 16 seconds On, 8 seconds OffFully adjustable, 2-to-1 ratio timing cyclesModular components are attached to a cast metal back plate, simplifying serviceLow to high vacuum ratesLarge, easy to grip knobsPrecision Medical Continuous and Continuous & Intermittent Vacuum Regulators provide regulated, continuous and intermittent vacuum for tracheal and pharyngeal airway management, continuous negative pressure, chest drainage and surgical procedures.The Two Mode Continuous Vacuum Regulator model series regulate vacuum at low, medium and high levels up to maximum vacuum with gauge increments up to 300 mmHg. The Two Mode High Vacuum regulates vacuum at low, medium and high levels up to maximum vacuum with gauge increments up to 300 mmHg.The unique modular design makes repair a breeze for any biomed or central supply department. The unit is made up of six (6) easy-to-replace modular components.Unlike the normal plastic inlet and outlet connections on most units, the cast metal backplate connections are extremely durable, thereby saving unnecessary repair costs.As a result of its modular design, the unit is 25-50% smaller than other suction regulators making it the product of choice for crowded wall and rail areas.The case is made of strong plastic. It features a smooth surface with rounded corners making cleaning easy. The case also houses the gauge for extra protection.The large control knob and easy-to-read settings make vacuum adjustments simple, even in emergency situations.The Pediatric vacuum regulator is restricted to 170 mmHg (±10 mmHg) to prevent high vacuum situations and the gauge face is imprinted with the Precision Medical's 'Stork Symbol' to identify the unit for pediatric applications.