Check the listing for details. Strain Gauge Bend Test Sensor Module Y3 Charge Amplifier Voltage Output Module. Condition: New. Listed at 17.99 USD. BF350-3AA/1.5AA Strain Gauge Bend Test Sensor Module Y3 Charge Amplifier Voltage Output Module For Arduino Description: The working principle of resistance strain gauge is based on the strain effect produced by mechanical deformation, namely the role of conductor or semiconductor materials in the external force when the resistance value changes, this phenomenon is called "strain effect". The strain gauge is attached to the object to be measured, so that it is bent along with the strain of the measured object. A lot of metal in the mechanical bending of its resistance will change. Features: model:BF350-3AA / 1.5AA Gage Factor: 2.0 Strain: 2% Grid wires: Length x Width 2x3.5mm Substrate Size: lengthxWidth of 5x4.5mm Substrate: Modified Phenolic substrate. Product Include: 5pcs or 10pcs.