LDT0-028K is a sensor with good flexibility. It uses a 28μm piezoelectric film with silk-screened silver paste electrodes. The film is laminated on a 0.125mm polyester substrate. The electrodes are led out by two crimp terminals. When the piezoelectric film is deflected from the central axis by an external force in the vertical direction, it will generate a high strain on the film and thus have a high voltage output. When applied directly to the product to deform it, the LDTO acts as a flexible switch, producing an output sufficient to directly trigger the MOSFET and CMOS circuits; if the component is supported by the terminal and is free to vibrate, the component acts like an accelerometer or vibration sensor . Increasing the mass or changing the free length of the component will affect the resonant frequency and sensitivity of the sensor, and the multi-axis response can be obtained by deviating the mass from the axis. The LDTM-028K adopts a cantilever beam structure, the - terminal is connected to the signal by the terminal, and the - terminal is fixed to the mass. It is a vibration sensor that can generate high sensitivity at low frequencies.