Stainless steel junction box with potentiometer JB-054S, which can be connected to four sensors Small junction box Due to the differences in the key materials, strain and body of the sensor and the manufacturing process, the parameters of each sensor are inconsistent, mainly because of the sensitivity. This inconsistency is what is commonly referred to as angle difference. For this reason, the term junction box is involved, that is, the output signal of the sensor is connected to the junction box first, and then sent to the instrument, which is adjusted by adjusting the potentiometer inside the junction box. Angle difference, so that the sensitivity of each sensor is close to the same, so as to ensure the balance of the whole scale body.