There are N load cell inlets and a N-channel A/D module in each Hirs-N (N-channel) digital weighing J-Box, which can process each channel signal and output signals separately, or do the processing at one time and output signals in serial to the bus. In addition, angular difference adjustment can be done in the J-Box. Especially for muti-channel hopper/tank weighing, digital truck scale, industrial process weighing instruments.