Are you sure that this Hantek handheld oscilloscope is not a true RMS when working on DMM mode? I am asking that, because the measurements are very close to a True RMS DMM as a Flir DM66. I would like to have an official answer from Hantek if it is possible. I will post this answer on my YouTube channel Rádios Antigos & Cia Ltda. Many thanks. Alvaro.