TP-LINK TAPO

[rare scarab]

Tp link tapo smart plug p110 looks like showing incorrect value
Voltage X Current is not same as any wattage

[ruby ibex]

firstly I would avoid tapo devices in future, however to answer your question:

there will always be some variance due to polling timing and rates of each sensor.

It also depends on the power factor of your load and how the sensors are reading it. if the power factor is not perfect this may cause the calculation to be off.

[rare scarab]

I plug direct to wall socket, should be not have power factor issues right?

And also if not using tapo,what can I use?

My home assistant is running on a raspberry pi 4b

[ruby ibex]

power factor depends on the type of load and its inductance

[ruby ibex]

personally i recommend shelly devices

[ruby ibex]

as long as your not using an sd card that should be fine

[rare scarab]

Something like this?

[ruby ibex]

shelly make a lot of stuff, that is one of them. you could wire that one behind a normal socket to track its consumption

shelly make normal smart plugs too but I guess it depends on your country if they make them.

given the currency on the screenshot you are malaysian? which is a type G plug (same as UK) which shelly definitely make

[rare scarab]

Yes,malaysia

UK company?

[ruby ibex]

i actually dont know where shelly is based orginally but make stuff internationallly

i use there smartplugs in the UK and you have the same socket and AC, so you should be able to use the wifi type g ones

[rare scarab]

Alright, thanks

I try to continue monitor the value then manual add some power factor in calculation to minimize the difference