Glazing panel, particularly an insulating glass unit, comprising at least a first and a second sheet of glass which are joined together via an intercalated frame which keeps them a certain distance apart and, between said at least two sheets of glass, at least one internal space closed by the intercalated frame arranged around said internal space, - the intercalated frame comprises an opening that causes the internal space to communicate with the outside of the unit, in that the unit comprises at least one electrically conducting element inserted in the opening, a first end of the conducting element being situated in the internal space and a second end of the conducting element being situated outside the internal space and in that the unit also comprises a first plug of thermoplastic elastomer material that closes the opening around the electrically conducting element, - it comprises, in the internal space, at least one insulating substrate coated, at least in part, with at least one conducting track electrically connected to the first end of the conducting element, - the conducting element is an electric cable comprising at least one longilinear conducting element protected by an insulating sheath, characterized - in that the first end of the electric cable is embedded in a second plug of thermoplastic elastomer material, - and in that it comprises a reservoir attached inside the internal space to the intercalated frame so that it can be positioned facing the opening, the reservoir comprising a through-hole through which the first end of the electric cable can pass, and (i) the insulating substrate coated, at least in part, with at least one conducting track is arranged in a slot made in one side of the reservoir so that a portion of the insulating substrate coated, at least in part, with the conducting track is located inside the reservoir, (ii) the second plug of thermoplastic elastomer material fills the empty space inside the reservoir. - the intercalated frame comprises an opening that causes the internal space to communicate with the outside of the unit, in that the unit comprises at least one electrically conducting element inserted in the opening, a first end of the conducting element being situated in the internal space and a second end of the conducting element being situated outside the internal space and in that the unit also comprises a first plug of thermoplastic elastomer material that closes the opening around the electrically conducting element, - it comprises, in the internal space, at least one insulating substrate coated, at least in part, with at least one conducting track electrically connected to the first end of the conducting element, - the conducting element is an electric cable comprising at least one longilinear conducting element protected by an insulating sheath, characterized - in that the first end of the electric cable is embedded in a second plug of thermoplastic elastomer material, - and in that it comprises a reservoir attached inside the internal space to the intercalated frame so that it can be positioned facing the opening, the reservoir comprising a through-hole through which the first end of the electric cable can pass, and (i) the insulating substrate coated, at least in part, with at least one conducting track is arranged in a slot made in one side of the reservoir so that a portion of the insulating substrate coated, at least in part, with the conducting track is located inside the reservoir, (ii) the second plug of thermoplastic elastomer material fills the empty space inside the reservoir. (i) the insulating substrate coated, at least in part, with at least one conducting track is arranged in a slot made in one side of the reservoir so that a portion of the insulating substrate coated, at least in part, with the conducting track is located inside the reservoir, (ii) the second plug of thermoplastic elastomer material fills the empty space inside the reservoir.