Most sensitive smart zigbee plug

Hello all!

Has anyone tested zigbee plugs in relation to their sensitivity? What is the best?

I have a device where I can’t differentiate whether it’s powered on or not, as it seems it uses too less power to get measured by my Tuya _TZ3000_gjnozsaz plugs or I only get 0W with deCONZ software.
How can I check if the plug is more accurate than deCONZ provides the value?

Thank you very much for your help!
Kind regards