| 摘要 |
A user is provided with a transmitter, for example, an activated barrier movement operator code transmitter. The transmitter includes an indicator such as an illumination device. A proximity sensor senses the proximity of a portion of a user (e.g., the hand of the user) to the transmitter. Subsequently, the indicator (e.g., the illumination device) is actuated to illuminate a portion of the code transmitter to facilitate the visibility of at least one transmitter function to the user.
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