OBar Digital Manometer and Battery System Alarm

0-4″ Digital Differential Pressure Gauge
Built-in audible and visual alarm with push to silence feature.
Fully programmable for alarm set-point, delay (display and alarm), units and more.
Pipe or wall mountable.
Includes mounting bracket/hardware, batteries, system label, 2′ of vacuum tube.
Requires 4 x AA batteries (included)