I have an occasional use for a watt meter so I've owned 2 of them, the two different models that Jaycar sells. One is an Elto and you find it all over the place. Both failed on me after a few month of disuse, the cheaper one just gives weird nonsensical readings now and the more expensive one is completely dead.

https://www.jaycar.co.nz/mains-power-meter/p/MS6115
https://www.jaycar.co.nz/deluxe-larg...-lead/p/MS6119

Has anyone had a good run out of a watt meter, say more than a couple of years of occasional use? and if so what model and where did you get it ?