Trailer Tester, Compatible Trailer Type Boat Trailers, RV Trailers, Semi-Trailers, Small Trailers, Utility Trailers, Material Plastic, Connector Type 4-Way Round, 5-Way Round, 6-Way Round, 7-Way Round, 7-Way Blade, Control Type Manual, Operating Voltage 6 to 24V DC, Features Lifetime Warranty, Pressure Equalization Valve, Waterproof, Electrical Diagnostics Light Testing, Short Circuit Fault Detection, Wiring Diagnostics, Brake Types Tested Electric Brakes WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. -