Patent attributes
A lighting control system for operating lighting in a room is provided. The lighting control system may comprise a load controller, sensors, and battery powered lighting control devices, such as switches, dimmers, and/or keypads. The load controller is configured for controlling the operation of a lighting load in response to messages received from the lighting control devices and sensors over a wireless network. The battery operated lighting control device is configured for detecting a low battery level, transmitting a low battery message to the load controller, and entering into a low battery mode during which it ceases transmitting any messages to the load controller until the battery is replaced. In response to the low battery message received from at least one lighting control device, the load controller is configured for entering into a low battery mode during which it maintains the lighting load turned on. The load controller is configured for exiting the low battery mode and resuming normal operation upon receipt of a subsequent message from the at least one lighting control device.
