The PicoLog CM3 USB and Ethernet networked current data logger measures power consumption of any line-connected equipment, building supplies, and machinery. Three channels allow it to monitor current in single- or tri-phase ac installations. Applications include monitoring three-phase motors and generators, measuring the consumption of heating, ventilation and air conditioning (HVAC) systems, and balancing phases in multiphase supplies. The CM3 logger comes with three ac current clamps and a data acquisition software package that’s compatible with Windows XP or later. Price is $539. SAELIG CO., Pittsford, NY. (888) 772-3544.