What makes the GiraffeG4 Sentinel User App the best Low Clearance Collision Prevention tool ?

• Simple to use…Load the height of the RV you’re driving…You’re ready to go
• Get an audible alert 100 yards before you reach the low clearance bridge or railroad trestle you’ll hit.
• Has its own GPS… follows whatever route you’re taking
• Works with all commercial GPS apps and GPS apps for small vehicles.
• Over 14,000 locations in the United States, Canada and the UK. 
• “Do Not Enter” warning at every Parkway entrance in NY, NJ, CT and MA where your rig is prohibited.