Handheld transmitter and motor vehicle

A handheld transmitter comprising:

• a housing having at least one key, the key including:
• a key cover,
• a switch located inside the housing, the switch including a rigid contact and a resilient contact, the resilient contact aligned with the rigid contact and the resilient contact configured to be actuated by the key cover to engage the rigid contact to operate the switch;
• and
• a flexible membrane arranged between the key cover and the resilient contact of the switch, the flexible membrane having a flexible substrate having a first surface disposed toward the resilient contact and a second surface, different than the first surface, disposed toward the key cover, and a reinforcement formed within a common plane with the second surface in a contact area that is configured to be engaged by the key cover.