Product Features: Simple, one button operation - eliminates errors in testing Test button turns green when measurement is stable 2P resistance/ 3P ground resistance measurement up to 50k¦ for highly resistive terrain Large back lit digital display - easier to read in all lighting conditions Automatic hold function - retains last measurement after the reading stabilizes Automatic test frequency selection between 128 and 256 Hz Powers up in 2 pole mode - automatically checks the injector lead connection when connected to the H auxiliary rod Convenient storage of the three measurements along with the average and % deviation Built in test lead compensation capability CAT IV 600V rated for a high level of operator safety Color coded leads and terminals provide fast, error-free connection hook-up Detects and prohibits hazardous voltage measurement Direct access to all functions, even when wearing work gloves Rugged water resistance case, for all terrain use Built-in display stand to prop up instrument for seeing the display better when placed on the ground