ALARM TESTING DEVICE

Brand Owner (click to sort) Address Description
CAT KIT HSI FIRE & SAFETY GROUP 107 Garlisch Drive Elk Grove Village IL 60007 Alarm testing device in the nature of an aerosol spray and an enclosure device for testing the function and effectiveness of carbon monoxide detectors;KIT;
PURCHECK HSI FIRE & SAFETY GROUP 107 Garlisch Drive Elk Grove Village IL 60007 ALARM TESTING DEVICE IN THE NATURE OF AN AEROSOL SPRAY FOR TESTING THE FUNCTION AND EFFECTIVENESS OF SMOKE DETECTORS;PURE CHECK;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. The present invention provides a burglar alarm system capable of accurately discriminating an alarm from a disturbance noise approximate to the alarm such as background music, ambient noises, etc. In a burglar alarm system comprising an alarm unit attached to an object to be protected from theft to emit an alarm of a particular frequency and an alarm sensor device for issuing an alarm signal upon sensing an alarm from the alarm unit, the alarm sensor device counts a predetermined number of waveform pulses of a received sound (S2, S5) more than once (S1~S3, S4~S6), determines, if it transpires that a differential between counted values falls within a predetermined time range, that the received sound is an alarm and issues an alarm signal (S7).