The Innovative Products of America Heavy Ranger MUTT (Mobile Universal Trailer Tester), No. 9102, is a portable and light-weight light and electric brake tester. Compatible with 7-way round pin connection types, the Heavy Ranger MUTT is designed to simulate all electrical circuits while providing short protection on industry standard pin configurations. The water resistant, ammo can case allows for on-the-go testing without the need for a tow vehicle. The MUTT is made in U.S.A. and features an external power accessory port and internal battery compartment that uses common motorcycle type batteries. It comes with a battery charger and IPA's 24-hour repair or replace warranty policy.