Easily determine the correct loop system for the room. Preset output level ensuring consistent test results. Compact and lightweight. Combined with the Loopworks Measure R1 Field Strength Meter, the HLS-2D Metal Loss Test Kit delivers a preset output level to give consistent test results. Ideal as a quick and simple site assessment tool. The HLS-2D comes with a 12V power supply but can also be used with a suitable 12V battery. It uses efficient class D current drive technology to reduce power consumption and heat output. It is the only truly portable loop test driver that is capable of generating test signals to the IEC60118-4 Standard. The 4mm banana output sockets (included) allow simple connection to test cables. The unit has a 5 year warranty and free technical support.