Voltage: 110V Temperature Accuracy: Ambient + 9oF to 482oF (ambient + 5oC to 250 oC) End Vacuum: Better than 29.9 inHg / 500 mTorr / 0.7 mbar Door Gasket Material: Silicone (optional Viton) Interior Volume: 1.9 cu ft (53 L) Nominal Power: 1.5 kW Nominal Voltage: 115V +/- 10%, 50-60Hz, 1-phase (optional 230V) Nominal Current: 15A (115V)