REMOTE DETECTING SYSTEM AND METHOD

摘要

A system for detecting the existence of a hazardous condition in an area includes a number of battery-powered detecting units (20) whereby each unit (20) includes a sensing circuit (U2) for sensing the hazardous condition within that respective zone and generating a hazardous condition alert signal in response thereto. A battery level monitoring circuit (U5) for monitoring the level of the battery of the detecting unit (20) and generating a battery status signal when the battery is at an acceptable level. The transmitting circuit (U1) for transmitting the hazardous condition alert signal and/or battery status signal, and a receiving unit (50) which is responsive to the detecting units (20). The battery status indicating circuit is responsive to the battery status signals to provide a first and second visual indicating conditions. The hazardous condition alert circuit is responsive to the hazardous condition alert signals to activate the visual indicators, respectively. The battery status signals are preferably periodically transmitted by the detecting units (20) to the receiving unit (50).