The Additel ADT920HV-B2 is a high-voltage calibrator that offers unmatched accuracy and stability in a compact and portable design. Its unique features include: Voltage output range up to ±1200V Accuracy of ±0.005% of reading Stability of ±0.001% of reading per year Built-in rechargeable battery for up to 10 hours of operation* Intuitive user interface with large backlit display The ADT920HV-B2 is ideal for calibrating high-voltage devices such as power supplies, meters, and transducers. Its exceptional accuracy and stability make it the perfect choice for demanding applications where precision is critical.