Extech 380366 Insulation Tester & Datalogger Features Autoranging insulation measurements to 4000MΩ with 250/500/1000V Test Voltages and 1mA test current

• Datalogging function stores up to
  16,000 readings with single store or a programmable rate of 1 to 65,000
  seconds per sample
• Large dual 4000 count backlit LCD
  and fast 50 segment analog display
• Data Hold, Test Lock, Audible continuity, and Low Resistance functions
• Measure up to 600V AC
• RS-232 PC interface with
  Windows® 95/98/NT/2000/ME/XP compatible software