8 channels, each with 20 kHz. Integrated operating hours counter; Measurements: voltage, current, K-factor, three-phase components, power factor, active/apparent/reactive power, active/apparent/reactive work, voltage wave shape, frequency. Rated voltage: 417 to 720 VAC 4-conductor system, 480 VAC 3-conductor system. Overvoltage category: CAT III 600 VAC. Memory space: 256 MB. Digital inputs: 8. Digital outputs: 5. Interfaces: RS-485, Profibus DP, Ethernet, Protocols: 14. Degree of protection: IP 20. Operating temperatures: –10 to +55 °C. Dimensions: B 144, H 144, T 81 mm.