I have the basic portable, plug-in $20 model that shows usage on the LCD screen, but once you unplug it, everything resets. It also only shows aggregate totals, not on-off times and elapsed usage hours. I'm looking for something similar in portability, but with logging and graphing, ideally on a PC. I found one wireless cloud based unit, but it only logs to the company's cloud, not locally and it doesn't appear to have the detail I want. I want to log the time on and time off for the connected device and how many hours each day in each state. It can be a graph, a logic type high/lo graph, or simple numerical. For example, when used on a deep freezer, log 'ON' at 12:05PM, log 'OFF at 12:45 PM and show an 'ON' duration of 45 minutes. If a similar cycle repeats four times a day, I should see four On/Off cycles and a total run time of about 180 minutes. Ideally it should be wireless and connectable to the LAN/WiFi, but USB would work if the data was stored on board and downloadable. When you look at the LCD you can clearly tell when the connected load is on or off simply by the wattage displayed. Less than 4 watts (for example) is while the load is 'OFF' and in standby mode. When 'ON', wattage would jump to 75 or higher in most cases. The device I want should be able to see those changes and log them. I don't want anything connected via the main meter or panel, just a portable device similar to the basic model I have now so I can track individual devices.