This product is a strain gauge, used for bending test output, professional and easy to use. Feature - Color: As Shown. - Material: modified phenolic substrates. - Size: 3 x 1. 5cm. - Voltage: 5V - The output voltage: 0- 3. 5V - Flux: Ordinary solder - Strain : 2% - Board size: 32 X 17 mm - Resistance: 350 Ohm - Fatigue life: & ; 10 million times - The working principle is to change the resistance value correspondingly according to the strain effect produced the mechanical deformation of the conductor or semiconductor material under the action of external -- long fatigue life, than 10 million times, than similar products - protection diode to and test from damage in an emergency - output, the directly output can be directly read and processed the next- level - Note: Light and different monitors may cause the color of the objects in the picture to be slightly different from the actual objects. The allowable measurement error is Package list: 4 x Strain Bending Detection Module