ARB Voltage Drop Tester ARB FridgeThe voltage drop tester has been developed to test DC wiring circuits used to power ARB Fridge Freezers. The unit applies a fixed load to the circuit that is equivalent to that of the largest ARB fridge freezer. The voltage drop tester is non invasive on the wiring circuit and is compatible with both merit and traditional cigarette lighter sockets. Voltage readings are displayed on the digital multi meter that is included with the kit. Warranty