PROMAX PE-457
 4000 MΩ Analog/Digital Automatic Isolation Meter

• Display: 3½ digits and 50 segments
• Accuracy
  • AC Voltage: 1.5%
  • Continuity mode: 1%
  • MegaOhm mode: 3% (1 GΩ), 5% (<4 GΩ)
• Dimensions/Weight: 190 x 140 x 77 mm; 900 g.

The PE-457 carries out 2.5 readings per second for digitally indications and 10 readings/sec. in case of analogs. Also, it has low-battery indication, display with backlight and accuracy until ± 2% in measurements up to 20 MegaOhms.