The Super Ranger MUTT, No. #4300A-L4, by Innovative Products of America (IPA) is the first self-contained, portable trailer ABS tester. This advanced, one-man diagnostic tool with a built-in LiFePO4 battery, troubleshoots trailer ABS and lighting systems without a truck. Its watertight enclosure with a carry handle incorporates a mounted trailer socket and internal storage for the trailer cable, battery charger, and remote control. The Super Ranger MUTT is microprocessor controlled and features state-of-the-art current sensing, computer-controlled circuit protection, live circuit monitoring with automatic fault alerts, as well as digital voltage and amperage draw readouts on a convenient LCD screen.