The Shark 200-S submeter provides 0.2% revenue-certified bidirectional energy measurement coupled with extensive interval data logging and IEEE 802.11 Wi-Fi communication. The sub-meter offers 2MB of logging capability for recording various aspects of power, including voltage, current, frequency, watts, VARs, and PF, in addition to interval energy data. Up to three historical logs are available, as well as an alarm log and a system events log for tracking attempted reads and tampering.

For more information:

http://www.electroind.com/shark200s.html
http://www.electroind.com/pdf/Shark100S_200S_brochure.pdf. http://www.electroind.com/pdf/submetering-2.ppt
http://www.electroind.com/pr.html#40609