The multi-channel wireless force measuring system is special customized measuring system. It isformed by displaying wireless force measuring terminals which could be up to 5PCS and a handheld wireless instrument. The handheld wirless instrument can also receive and display five terminals' values and sum of them. The system is currently used in heavy-duty trucks and trailer, provides the payload and loading position, neither overload nor underload. Each terminal can be calibrated by handheld instrument or it's own overlay button.