The Insulation Tester / Insulation Meter PCE-IT100 measures insulation resistances with auxiliary voltages of 125V, 250V, 500V and 1000V, up to a maximum of 4000 MΩ. Furthermore, the measurement of low resistances up to 400 Ω and a measurement function for alternating and DC voltages are offered by this Insulation Tester / Insulation Meter. A continuity tester with a beep is also part of the equipment of the insulation meter. In addition to a data-hold function for holding the current measured value, the max. or min. value in the Insulation Tester / Insulation Meter can also be recorded during voltage and low-ohm measurement. 
Thanks to the large numbers and the lighting, the display of the Insulation Tester / Insulation Meter is easy to read even under difficult lighting conditions. The large buttons and the rotary knob for selecting the measuring functions allow easy operation of the PCE-IT 100 insulation meter. The Insulation Tester / Insulation Meter comes with a set of test leads with test probes, a test lead with crocodile clip and 6 batteries.

- For new plants (dry rooms): 1000 ohms x volts of operating voltage (e.g. at 230 volts > 230 kOhms)
- For new installations (wet rooms, outdoors): 500 ohms x volts of operating voltage
- Earthed devices: 1000 ohms x volts of operating voltage
- Protected devices: 2 MOhm
- Power tools: 2 MOhm
- Protective extra-low voltage: 250 kOhm
- Electrical measuring devices: 5 MOhm
- Common test voltage values are 100 volts for low-voltage and telecommunication systems, 500 volts for building installations and home appliances, and 1000 volts for low-voltage motors and transformers