Vibration remote sensor based on speckles tracking, comprising the following components integral to a horizontal plane: - a laser configured to emit a coherent light signal along an axis incident on a distant surface; - a receiving optic (430,440,460) of a light signal returning from said distant surface along an optical axis; - a measuring sensor of said light signal returning along said optical axis; - an electronic processing unit of the data detected by said measuring sensor configured to calculate a speckle pattern correlation; the vibration remote sensor being characterized in that: - a first accelerometer is positioned between the receiving optics and the measuring sensor comprising: - a linear element having torsion constant kg, which is stretched, parallel to an optical axis, between two ends of a frame; - a mechanical arm fixed to said linear element transversely thereto; - an inertial metallic mass placed at one end of said mechanical arm opposite to said linear element; - a magnet integral with said frame and positioned in front of said inertial mass at an adjustable distance d mm therefrom; - an optical reference integral with the inertial mass; - a light source configured to illuminate said optical reference; and - a sensor for the optical detection of the movement, normal to the optical axis, of said optical reference integral with the inertial mass; - said accelerometer is positioned so that the inertial mass is free to oscillate at least along a direction perpendicular to said horizontal plane; - said light source is different from said laser; and - said measuring sensor is additionally configured to detect successive images of the optical reference, which is integral to the inertial mass, to measure its perpendicular displacements (y c) relative to said horizontal plane. - a laser configured to emit a coherent light signal along an axis incident on a distant surface; - a receiving optic (430,440,460) of a light signal returning from said distant surface along an optical axis; - a measuring sensor of said light signal returning along said optical axis; - an electronic processing unit of the data detected by said measuring sensor configured to calculate a speckle pattern correlation; - a first accelerometer is positioned between the receiving optics and the measuring sensor comprising: - a linear element having torsion constant kg, which is stretched, parallel to an optical axis, between two ends of a frame; - a mechanical arm fixed to said linear element transversely thereto; - an inertial metallic mass placed at one end of said mechanical arm opposite to said linear element; - a magnet integral with said frame and positioned in front of said inertial mass at an adjustable distance d mm therefrom; - an optical reference integral with the inertial mass; - a light source configured to illuminate said optical reference; and - a sensor for the optical detection of the movement, normal to the optical axis, of said optical reference integral with the inertial mass; - a linear element having torsion constant kg, which is stretched, parallel to an optical axis, between two ends of a frame; - a mechanical arm fixed to said linear element transversely thereto; - an inertial metallic mass placed at one end of said mechanical arm opposite to said linear element; - a magnet integral with said frame and positioned in front of said inertial mass at an adjustable distance d mm therefrom; - an optical reference integral with the inertial mass; - a light source configured to illuminate said optical reference; and - a sensor for the optical detection of the movement, normal to the optical axis, of said optical reference integral with the inertial mass; - said accelerometer is positioned so that the inertial mass is free to oscillate at least along a direction perpendicular to said horizontal plane; - said light source is different from said laser; and - said measuring sensor is additionally configured to detect successive images of the optical reference, which is integral to the inertial mass, to measure its perpendicular displacements (y c) relative to said horizontal plane.