v The best device designed for hours of service HOS/ELD in compliance with the DOT Federal Motor Carrier Safety Administration and other regulatory agencies. It has Bluetooth connection that communicates straight to your cell phone or tablet’s app and it is 100% compliant with the Department of Transport. The PT30 is simple to install, just plug it into the diagnostic connector port in the truck/vehicle. Additional Details ------------------------------ Product description: v The best device designed for hours of service HOS/ELD in compliance with the DOT Federal Motor Carrier Safety Administration and other regulatory agencies. It has Bluetooth connection that communicates straight to your cell phone or tablet’s app and it is 100% compliant with the Department of Transport. The PT30 is simple to install, just plug it into the diagnostic connector port in the truck/vehicle.