The Yellow Jacket P51 Titan Digital Manifold Series provides ultimate system measurements with ease. This 4-valve manifold provides fast and accurate measurements for refrigeration and a/c systems. Measurements are displayed on a backlit digital display and can be transmitted via Bluetooth to a Smartphone for even further analysis. Local display of system pressures and temperatures, superheat and subcooling provide instant analysis. When connected to your Smartphone, target superheat and subcooling are easily attained, along with all the other capabilities of the ManTooth app.