Correct if im wrong but Most of the new meters beep on anything , eg rotary switch, buttons, power going off, they should have an option to mute beep except on continuity . The Mestek it is a good alternative, looses the splitted jack for the mA , but at least NCV has the antena functional and visible, has well other functions.
One more thing about the 133A, they claim a drop of 2 meters
I was looking for a alternative on the uni-t 50b that i could easly carry on a toolbox