An electronic measuring device, comprising: a main printed circuit assembly; and one or a plurality of channel modules (100, 200, 300)) mechanically and electrically connected to the main printed circuit assembly, wherein at least one channel module of the one or a plurality of channel modules comprises: a channel printed circuit board electrically connected to the main printed circuit assembly, the channel printed circuit board having a first side and an opposing second side; a first insulating housing disposed on the channel printed circuit board, the first insulating housing defining a cavity, the cavity covering at least part of electrical elements mounted on the first side of the channel printed circuit board; a first conductive shielding frame at least partially disposed on the first insulating housing and separated from the cavity and the channel printed circuit board via the first insulating housing, and the first conductive shielding frame covering the at least part of electrical elements mounted on the first side of the channel printed circuit board; and a second insulating housing disposed on the first conductive shielding frame and configured to sandwich the first conductive shielding frame between the second insulating housing and the first insulating housing, so as to lengthen an electrical path from the first conductive shielding frame to the channel printed circuit board. a main printed circuit assembly; and one or a plurality of channel modules (100, 200, 300)) mechanically and electrically connected to the main printed circuit assembly, wherein at least one channel module of the one or a plurality of channel modules comprises: a channel printed circuit board electrically connected to the main printed circuit assembly, the channel printed circuit board having a first side and an opposing second side; a first insulating housing disposed on the channel printed circuit board, the first insulating housing defining a cavity, the cavity covering at least part of electrical elements mounted on the first side of the channel printed circuit board; a first conductive shielding frame at least partially disposed on the first insulating housing and separated from the cavity and the channel printed circuit board via the first insulating housing, and the first conductive shielding frame covering the at least part of electrical elements mounted on the first side of the channel printed circuit board; and a second insulating housing disposed on the first conductive shielding frame and configured to sandwich the first conductive shielding frame between the second insulating housing and the first insulating housing, so as to lengthen an electrical path from the first conductive shielding frame to the channel printed circuit board. a channel printed circuit board electrically connected to the main printed circuit assembly, the channel printed circuit board having a first side and an opposing second side; a first insulating housing disposed on the channel printed circuit board, the first insulating housing defining a cavity, the cavity covering at least part of electrical elements mounted on the first side of the channel printed circuit board; a first conductive shielding frame at least partially disposed on the first insulating housing and separated from the cavity and the channel printed circuit board via the first insulating housing, and the first conductive shielding frame covering the at least part of electrical elements mounted on the first side of the channel printed circuit board; and a second insulating housing disposed on the first conductive shielding frame and configured to sandwich the first conductive shielding frame between the second insulating housing and the first insulating housing, so as to lengthen an electrical path from the first conductive shielding frame to the channel printed circuit board.