5000V: 300 kΩ to 10,000 GΩ (10 TΩ). Automatic test inhibition (if live sample >25V). Designed and built to IEC safety standards. 2500V: 100 kΩ to 10,000 GΩ (10 TΩ). Smooth Function (user selectable) Digital filtering stabilizes display readings.
eBay