| Model | Max. Output AC Voltage | Output AC Current | Max. Output DC Voltage | Output DC Current | Additional Measurements |
| GLP1e-HV | 6.0 kV | 100 mA | 6 kV | 10.0 mA | Insulation resistance, ramp |
GLP2e | 5.5 kV | 100 mA | 7 kV | 100.0 mA | Continuity test, resistance, short circuit, Function, Leakage test, Residual voltage, Analog tests | GLP2e-HV | 6.0 kV | 100 mA | ? | ? | Insulation resistance, ramp | GLP2i | 50.0 kV | 1000 mA | 50 kV | 1000.0 mA | Insulation breakdown, PE resistance, Function, |