The sensor is a group of half-bridge strain gauge, there are 3 ways to use it: 1. Use one sensor with an external resistor to form a full-bridge measurement, the range of a sensor range: 50kg. External resistance on the higher requirements. 2. Use two sensors to form a full-bridge measurement, measuring range for the sum of the two sensors: 50kgx2 = 100kg 3. Use four sensors to form a full-bridge measurement, measuring range for the sum of four sensors: 50kgx4 = 200kg