The DVM3 reads the voltage for battery energizers even when the energizers are in Battery Save Mode Earth stake for ease of ground connection Fence stud - for quick, no fuss contact with fence Powered by one 9V battery with a life of 6-12 months Displays fence voltage from 100V to 10kV in 100 volt increments Displays fence voltage from 10kV to 12kV in 1,000 volt increments Activated when fence pulse is detected Auto turn-on indication Display to show low battery condition Innovative micro-computer technology Useful to check earth performance/voltage Improved temperature stability Water resistant