Review on P3 P4400 Electricity Usage Monitor by Paul Dobson

The thing is scrap. Mine reads over 9V/A even with nothing connected to it! This renders this device unusable for monitoring power consumption of relatively underperforming devices such as wireless routers, standby use of small appliances, etc. I have tried to contact Kill-A-Watt several times to no avail. I checked this too. compared to an expensive Fluke DMM with higher power loads and poor accuracy. The voltage is within a few percent, but the current reading can differ by more than 10%, which in turn causes the watts, VA, and kWh readings to vary by similar amounts. It's just another poorly designed, poorly manufactured, poorly maintained Chinese product.