Built-in LED torchlight to illuminate test area Flashing backlight as visual alert during continuity tests in dim areas Data logging capability (stores up to 10 readings) IR connectivity to transfer data to PC for record > Each Unit Includes FREE Uglys Electrical Book FREE AC Voltage Detector Quick Start Guide Certificate of Calibration (CoC) U1167A 4 mm Tips probes test leads 4 x 1.5 V batteries