• Clock/calendar：Leap years, 24-hour clock
• Real-time clock accuracy：Not more than ±1 s/day
• Internal memory capacity for data：At least 2 GB
• Maximum recording period：At least 31 days
• Measurement time control：Automatic
• Maximum number of events：Limited only by the size of the internal memory
• Power requirements：100 to 240 V rms ±10%, 47-63 Hz, 40 W
• Operating time during interruptions (internal UPS operation)：5 minutes per interruption, 60 minutes total operating time withut recharging

• Input channels
   – Voltage: 4 channels, AC/DC
   – Current: 5 channels
• Voltage channels
   – Input resistance: 2 MΩ
   – Input capacitance: < 20 pF