rsckl I don't know, but I would never send it back as postage is too expensive. Anyway my personal opinion is that this devide will last longer than any decent warranty they might give.

rsckl MUSTOOL X1 can measure DC Voltage and DC Current MUSTOOL X2 (this one) can measure DC Voltage but can not measure DC Current.

rsckl Thisis relative simple electronics without any specific filtering. In so far I would be sceptical for industrial environments. Howveer you can add a line filter yourself and put it into a metal box. That should make it robust enough

rsckl Thisis relatively simple electronics without any significant filtering. In so far I would be sceptical for industrial environments.