The invention relates to an electronic device (1) for a gas container (100) comprising a rigid case (2) comprising measuring means (3) of at least one physical quantity delivering at least one signal representative of said physical quantity; signal processing means (4) for processing the signal supplied by the measuring means (3); and power supply means (5) for electrically supplying at least the signal processing means (4) and the measuring means (3). The rigid case (2) comprises a face for fixing (11) to a gas container (100), which comprises a curved flexible membrane (7) formed of at least one flexible material and shaped to have at least a first radius of curvature (R1). Gas container (100), such as a gas cylinder, comprising such an electronic device (1). Use of such a gas container (100), in particular a gas cylinder, for storing and / or providing a gas or gas mixture. Abstract figure: Fig. 3
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