Abstract: A scalable building control system comprising a plurality of network bridges and plurality of zone control systems each comprising one or more zone control devices and a load controller. Each zone control device is adapted to generate and transmit load control messages over a zone wireless network. The a load controller is adapted to receive the load control messages over the zone wireless network and control an electrically connected load device in response to the load control messages. Each of the plurality of network bridges is adapted to removably couple to at least one load controller of a zone wireless network to connect the zone control system as a node of a centralized wireless network. The network bridge is further adapted to transmit messages between the centralized wireless network and a connected load controller.

Abstract: A scalable building control system comprising a plurality of network bridges and plurality of zone control systems each comprising one or more zone control devices and a load controller. Each zone control device is adapted to generate and transmit load control messages over a zone wireless network. The a load controller is adapted to receive the load control messages over the zone wireless network and control an electrically connected load device in response to the load control messages. Each of the plurality of network bridges is adapted to removably couple to at least one load controller of a zone wireless network to connect the zone control system as a node of a centralized wireless network. The network bridge is further adapted to transmit messages between the centralized wireless network and a connected load controller.

Abstract: 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.

Abstract: A scalable lighting control system comprising a plurality of room lighting control systems each comprising a load controller electrically connected to a lighting load and one or more in-room devices, such as lighting control devices, occupancy sensors, and light sensors. Each in-room device is configured for transmitting room control messages to the load controller over a room wireless network. The scalable lighting control system further comprises a plurality of network bridges each configured for removably coupling to at least one load controller of a room lighting control system to connect the room lighting control system to a centralized wireless network. Each network bridge is configured for receiving centralized control messages over the centralized wireless network and transmitting the centralized control messages to the connected load controller.