Towing device for an agricultural or industrial vehicle, comprising: - a fixed frame associable with an agricultural or industrial vehicle; - a movable frame kinematically connected to said fixed frame and supporting at least one hooking element intended to engage with an auxiliary apparatus to be towed, wherein said movable frame can be moved with respect to said fixed frame between at least one open position and one closed position and said hooking element can be moved between an extended position, in which it is moved away with respect to said fixed frame to engage or disengage with the auxiliary apparatus, and a retracted position, in which it is approached to said fixed frame, to tow the auxiliary apparatus; - locking means of said movable frame with respect to said fixed frame, in the closed position; wherein said locking means comprise at least one locking element locked together with said movable frame and at least one gripping element associated with said fixed frame in a movable manner and engageable by said locking element following the achievement of the closed position by said movable frame; wherein the device comprises sensor means adapted to detect the locking of said movable frame with respect to said fixed frame, wherein said sensor means are associated with said fixed frame and are adapted to detect the position of said gripping element, and it comprises at least one electronic control unit operationally connected to said sensor means and to said hooking element and adapted to detect when the latter is in towing configuration, said sensor means are adapted to send a signal to said electronic control unit when said gripping element is in the rest position, characterized by the fact that said sensor means are fixed with respect to said gripping element. - a fixed frame associable with an agricultural or industrial vehicle; - a movable frame kinematically connected to said fixed frame and supporting at least one hooking element intended to engage with an auxiliary apparatus to be towed, wherein said movable frame can be moved with respect to said fixed frame between at least one open position and one closed position and said hooking element can be moved between an extended position, in which it is moved away with respect to said fixed frame to engage or disengage with the auxiliary apparatus, and a retracted position, in which it is approached to said fixed frame, to tow the auxiliary apparatus; - locking means of said movable frame with respect to said fixed frame, in the closed position; wherein said locking means comprise at least one locking element locked together with said movable frame and at least one gripping element associated with said fixed frame in a movable manner and engageable by said locking element following the achievement of the closed position by said movable frame; wherein the device comprises sensor means adapted to detect the locking of said movable frame with respect to said fixed frame, wherein said sensor means are associated with said fixed frame and are adapted to detect the position of said gripping element, and it comprises at least one electronic control unit operationally connected to said sensor means and to said hooking element and adapted to detect when the latter is in towing configuration, said sensor means are adapted to send a signal to said electronic control unit when said gripping element is in the rest position, characterized by the fact that said sensor means are fixed with respect to said gripping element. wherein said locking means comprise at least one locking element locked together with said movable frame and at least one gripping element associated with said fixed frame in a movable manner and engageable by said locking element following the achievement of the closed position by said movable frame; wherein the device comprises sensor means adapted to detect the locking of said movable frame with respect to said fixed frame, wherein said sensor means are associated with said fixed frame and are adapted to detect the position of said gripping element, and it comprises at least one electronic control unit operationally connected to said sensor means and to said hooking element and adapted to detect when the latter is in towing configuration, said sensor means are adapted to send a signal to said electronic control unit when said gripping element is in the rest position,