The utility model discloses a multifunctional sensor relates to the electric power system field, including sensor body, support and sleeve, the middle part fixedly connected with cylindrical rod of support, the sleeve fixed connection be in the top of support, the sensor body cup joints on the cylindrical rod, the bottom of support is equipped with the screw hole I that three size equals, threaded connection is gone up to screw hole I has the location double -screw bolt, circular insulating plate has been cup jointed on the cylindrical rod, the utility model discloses the location double -screw bolt convenience of bottom is fixed the sensor in the frame, cup jointed the sensor body on the cylindrical rod, the location of the sensor body of being convenient for, a plurality of through -holes that are equipped with on the cylindrical rod can make things convenient for being connected of sensor body and outside electric wire, circular insulating plate keeps certain distance between can the sensor body with the difference.