Intrusion detector test circuit which automatically disables a detected-event indicator

An intrusion detector test circuit for testing an intrusion detector, comprising:

• sensing means for generating a sensing signal in response to a detection of an installer testing the intrusion detector;
• indicating means for receiving said sensing signal and for generating a detected-event indication in response thereto;
• switch means interposed between said sensing means and said indicating means for receiving said sensing signal and, in a first state, for supplying said sensing signal to said indicating means, and, in a second state, for not supplying said sensing signal to said indicating means;
• and
• timer circuit means for setting said switch means to said first state and for setting said switch means to said second state automatically after a lapse of an predetermined time period, after said switch means is in said first state.

An intrusion detector test circuit for testing an intrusion detector, the intrusion detector being housed within a housing and having a sensing means for generating a sensing signal in response to a detection of an installer testing the intrusion detector, said intrusion detector test circuit comprising:

• indicating means for receiving said sensing signal and for generating a detected-event indication in response thereto;
• switch means interposed between said sensing means and said indicating means for receiving said sensing signal and, in a first state, for supplying said sensing signal to said indicating means, and, in a second state, for not supplying said sensing signal to said indicating means;
• first state setting means for setting said switch means to said first state by applying a first switch state control signal to said switch means;
• and
• second state setting means for automatically setting said switch means to said second state after a lapse of a predetermined time period by applying a second switch control signal after said lapse of said predetermined time period;
• and
• tamper switch means operable in two modes, actuated when said housing is removed and aleactuated when said housing is replaced, wherein in a first mode actuating said tamper switch causes said intrusion detector to generate an alarm, and wherein in a second mode actuating said tamper switch causes said first state setting means to apply said first switch state control signal to said switch means.