4 ms·So what better than motion-detector lights? It'll highlight any motion!by Doxin 3y agoSo what better than motion-detector lights? It'll highlight any motion!Izkata 3y agoYeah, that's the problem - it'll turn off if you just stand still underneath it, giving great camouflage to criminals.ilyt 3y agoNah just shove few hundred dollars heat camera to detect anything warm there, that will make project reasonable /s