Quite simply: the best insulation tester!

Particularly innovative and user-friendly, the C.A 6521 insulation tester is ideal for testing electrical installations and equipment:

* insulation: up to 400MΩ at 50V and 100V
* AC voltage measurement: 0 to 400V
* voltage indication before measurement of insulation: 0 to 600V AC/DC (blocking if U>25V)
* resistance: 0 to 40kΩ
* capacity: 0 to 4000nF
* current: 0 to 400mA AC/DC
* giant, 4000-count display + bargraph (simultaneous reading of the measurement and analogue variation) 

* backlit display
* programmable alarms 

* DREL function for testing for the presence of transmission frame or measurement of the
  resistance difference of 2 wires of a pair
* direct display in km of the length of the line being tested
* remote control probe (option)
* back stand for use on a table or on the ground
* high autonomy: 6 b