I have a lot of lizards in my house and am wondering if they'd turn the pir sensor on. I also want to know if small insects would turn the pir to high.
I think it is not going to work.
Are lizards cold blooded ?
A PIR sensor detects something big and something warmer than the background that is moving in front of the fresnel lense.
Perhaps a number of ultrasonic distance sensors. But I don't know how those sensors will respond to rain.
Erdin:
I think it is not going to work.
Are lizards cold blooded ?
Lizard - WikipediaA PIR sensor detects something big and something warmer than the background that is moving in front of the fresnel lense.
Perhaps a number of ultrasonic distance sensors. But I don't know how those sensors will respond to rain.
Thanks for the reply. I am glad to know. I actually don't want the lizards to activate it.
I kind of misunderstood your question XD.
Some good quality PIR sensor detect a moving human body at 15 meters or more.
Suppose a lizard has warmed under a lamp, and starts moving in front of a PIR sensor. If it is nearby a PIR sensor, say 2 meters and decided to move a little faster, it might turn on the sensor/alarm.
Or if the PIR sensor is looking at something hot, like a lamp or a floor heated by the sun. If something colder passes by between the hot object and the PIR sensor, the sensor also detects a change.
A spider right over the PIR sensor could also turn it on.
Conclusion:
Can PIR sensor be used to detect lizards: No, almost not.
Can a lizard turn on your alarm (with PIR sensors): Yes, it might happen now and then.