Spider is a cool blodded animal. Can it be detected by the passive infrared motion detector of the burglary alarm system?
2006-08-09 19:38:25 · 5 answers · asked by Leong 1 in Science & Mathematics ➔ Other - Science
Not usually, no. Under unusual circumstances, yes.
2006-08-09 19:44:41 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Most passive detectors to stop false triggers by small pets or flies etc., have a multiple zone system so that if only one zone is triggered it won't set off. Only larger objects will be big enough to cover two zones and so the spider wouldn't trigger it. Sensors also usually have need a certain speed of movement to trigger so that they won't be triggered by the sun's movement or sunlight moving through the sensor zone causing the sensor to trigger.
2006-08-09 23:36:36 · answer #2 · answered by Mesper 3 · 0⤊ 0⤋
No. An LED supplies out easy whilst a perfect contemporary flows by using it. There are various categories. some supply out purple easy, some supply out yellow easy some supply out infrared easy (which you won't be able to see) and a few supply out different colorations. a image-diode or photograph-transistor facilitates a contemporary to flow whilst easy (or infrared easy) falls on it. "It says the output could be a LED..." that's speaking on the subject of the output from the circuit as an entire, so as that once the LED lights fixtures up, you have a rapid way of on the grounds that the circuit works.
2016-12-11 11:05:51 · answer #3 · answered by battiata 4 · 0⤊ 0⤋
I don't think so , but I wish it were true. I hate spiders.. totally hate them. I'd set up motion detectors just to pick them up so that I could identify where they were and kill them before one of them snuck up on me. (shivers)
2006-08-10 01:17:34 · answer #4 · answered by Imani 5 · 0⤊ 0⤋
maybe if it walks between a heat source and the detector.
2006-08-09 19:44:45 · answer #5 · answered by Anonymous · 0⤊ 0⤋