| 摘要 |
A dual security system (10) includes one or more motion activated floodlights (12) installed about a premises. Motion sensors (18) are also located about the property. When the system is "armed", intruder or animal motion sensed by a motion sensor produces a sensor output which causes the floodlights to be turned "on" and illuminate the premises. An audible alarm (14) is wired in parallel with the floodlights so that when the floodlights are turned "on", a buzzer (20) sounds. Preferably, while the floodlights may remain "on" for an extended period of time, the buzzer alarm is connected to a buzzer time delay (22) which shuts the audible alarm "off" after a predetermined period of time.
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