Power requirements: 220VAí+10%, 50/60HZ, 2KVA Max or 110VAí+10%, 50/60HZ, 2KVA Max Application environment: Ambient temperature:32ípF~122ípF (0íµ~50íµ) Relative humidity: 30%~75% Atmospheric pressure for transport: 375 mmHg~795 mmHg Atmospheric pressure for operation: 525 mmHg~795mmHg Treatment Room Size: Recommended: 10ftí-10ft (2.5í-2.5 meters)