| 摘要 |
A warning system (10) arranged in a house (200) having a controller (11) which is designed to operate a first buzzer (17) in response to the activity sensor (20) detecting a person (204) in the vicinity of the house (200) and operate a floodlight (19) and a second buzzer (18) only when the activity sensor (20) activates while a light sensor (20) is in an activated state. The first buzzer (17) operates for the duration of a first pre-set time period, and the floodlight (19), which is delayed from operating for the duration of a second pre-set time period, operates for the duration of a third pre-set time period which is extendible upon further activation of the activity sensor (20). The warning system (10) may be easily configured to operate as an alarm system, or as a warning system which warns a user that the person (204) has been detected in a discrete manner.
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