Abstract: The invention relates to an H2 tank valve (1) for arrangement on an H2 tank (40) of an H2-powered motor vehicle, comprising: at least one flange (42a) for connecting the H2 tank valve (1) to the interior of the H2 tank (40), a temperature sensor module (10) arranged at least partially within the at least one flange (42a) for detecting a current temperature within the H2 tank (40) when the flange (42a) is connected to the H2 tank (40), a plug connector (30) electrically connectable to the temperature sensor module (10) for current transfer and data transmission, wherein the plug connector (30) is arranged laterally on the outside of the at least one flange (42a).