The JL3PR Job Link® system Pressure Probe sends long range wireless pressure measurements directly to the Fieldpiece Job Link® system mobile app. Easily reach service ports in tight spaces using the angled 1/4 in fitting. The rubberized protective housing is both ergonomic and rugged for daily use. Flip the switch to red or blue and the app immediately knows which side of the system you're going to place your Pressure Probe. The perfect balance of size and capability gives you exactly what you need to diagnose systems day in and day out quickly and confidently.