Single Channel Force Sensor - QA3040P Sensing range: 5g ~ 4kg Response time: <10usec Sensing Area: 36x26 mm Length: 46.3 mm / Width: 33 mm The Single Channel Force Sensor - QA3040P has 2 terminals: V and A. The terminals marked V and A are connected to the voltage and ADC port, respectively. Vin and ADC must be connected in order to run. On the sensor substrate, Vin is marked V and ADC is marked 'A'. Vin can be connected to any of the three V-pads to function. As the three A-pads are also internally connected, you can connect to any of the three A-pads to function.