| 摘要 |
<p>A fixed position remote control unit (20) as used with a movable barrier operator (11) has an externally accessible plug-in module interface (25). This interface (25) operably couples to the link (23 and 24) between the remote control unit (20) and the operator (11). So configured, a plug-in module (40) that docks and couples with this plug-in module interface (25) can receive operating (or charging) power from the movable barrier operator (11), exchange signaling with the movable barrier operator (11), or both. The ability to readily exchange signaling without invasive wiring permits a wide variety of plug-in modules (40) to be utilized.</p> |
