I was a bit sceptical about this product but having purchased 4 I am pleased with the result. I own a student share house and it has 4 rooms. Living in Tasmania our largest cost is heating in the cooler months. Each room has an electric oil filled heater, some students use them all the time others only occasionally. Normally when the Electricity bill arrives it is divided by 4 but with the Meross Plug, I am now able to look at the individual total usage and proportion the bill more fairly. It was simply a process of attaching the Meross Plug onto each heater and assigning each one a unique name(room number) Monitoring functionality a bit limited, no ability to reset cumulative usage counter to zero other than factory reset and no cloud version of data available when device offline. Also no ability to lock, password protect the device from changes or viewing only option of consumption data but what do you expect for $20?