This series of micro acceleration sensor is an accelerometer with built-in circuit, which converts high-impedance charge signal into low-impedance voltage signal, and uses coaxial cable for constant current source excitation input and signal output simultaneously. 1/4-28 four-core socket output, can simultaneously measure X, Y, Z triuranium acceleration signal, wide frequency response, small size, light weight, suitable for modal analysis, motor and pump, finishing and other vibration test occasions.