Woosh Posted June 20, 2008 Share Posted June 20, 2008 What about Aplex the lems are inside the detectors with the bus running round the detectors therefor the signals are on the bus line. I assume that that meets grade 4 ?? Link to comment Share on other sites More sharing options...
james.wilson Posted June 20, 2008 Share Posted June 20, 2008 Grade 4 isnt just about signalling but its biggie is that it must offer 'range reduction detection' is if the area of coverage chnages massivly it should be alerted. Thats why AFAIK the siemans (old alarmcom) unit uses a camera and you program it to the room. It compares the image stored with the current image.... big partition in the way = alert securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
spider Posted June 20, 2008 Share Posted June 20, 2008 Grade 4 isnt just about signalling but its biggie is that it must offer 'range reduction detection' is if the area of coverage chnages massivly it should be alerted. Thats why AFAIK the siemans (old alarmcom) unit uses a camera and you program it to the room. It compares the image stored with the current image.... big partition in the way = alert Only works with the light in the room on, Doh!! (but their working on it) Link to comment Share on other sites More sharing options...
james.wilson Posted June 20, 2008 Share Posted June 20, 2008 lol, IR I assume? you would think that microwave or ultrasonic could learn the environment its in, ie bats, dolphins and whales manage fine. securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment Share on other sites More sharing options...
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