| 摘要 |
A conservation system for a building area has an access device to allow entry into the building area. The access device is programmed with a predetermined amount of electricity usage. A system control device is used for detecting the access device and sends wireless signals of detection. An interrupt device is used for receiving the wireless signals of detection and for controlling operation of electrical devices. The interrupt device allows operation of an electrical device when the system controller detects the access device. The interrupt device transmits usage data to the system controller of the amount of electricity being drawn by the electrical device. The system controller will receive the usage data and compare the usage data to the predetermined amount of electricity usage. The system controller allows operation of the electrical device if a total amount of the usage data is less than the predetermined amount of electricity usage.
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